بالعلم ترتقى الامم
عربة قطار كتلتها 10 اطنان تسير بسرعة 20 م / ث اصطدمت بعربة قطار اخرى ساكنة
كتلتها 10 اطنان فاذا تحركت العربتان بعد التصادم مباشرة كجسم واحد
فاحسب سرعتهما المشتركة حينئذ واحسب ايضا طاقة الحركة المفقودة نتيجة
للتصادم بالجول
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
اذا اثرت قوة مقدارها 40 نيوتن على جسم كتلته 8 كجم لمدة 5 ثوان فان مقدار
التغيرؤ فى سرعة الجسم فى نفس اتجاه القوة يساوى ............. م/ ث
ا- 64
ب- 200
ج- 40
د-25
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
ب- جسم كتلته 4 كجم موضوع على مستوى خشن يميل على الافقى بزاوية
قياسها 30 ° ويتصل بخيط يمر على بكرة ملساء عند قمة المستوى ويتدلى
من الطرف الاخر للخيط جسم كتلته $\left(ك\right)$(ك) كجم فاذا تحركت الكتلة 4
كجم من السكون على المستوى الى اعلى مسافة 490 سم فى 2 ثانية فاجد
مقدار $\left(ك\right)$(ك) علما بان معامل الاحتكاك الحركى بين الجسم والمستوى $\frac{\sqrt{3}}{2}$√32
واوجد ايضا مقدار الضغط على محور البكرة
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
ربطت كتلتان 5ك , 2ك كجم فى نهايتى خيط خفيف يمر على بكرة ملساء وتتدليان
راسيا فاذا تركت المجموعة تتحرك من سكون فاوجد عجلة حركة المجموعة
واذا كان الضغط على محور البكرة يساوي 112 نيوتن فاوجد قيمة ك
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
اذا اثرت القوتان $\overline{2ق}\ =\ 2\ \overline{س}\ -\ \overline{ص}\ -\ 2\ \overline{ع}$2ق = 2 س − ص − 2 ع على جسم لفترة زمنية قدرها 2 ث
فان مقدار دفع القوى للجسم = ................. نيوتن / ث
ا- $5\sqrt{2}$5√2
ب-$10\sqrt{2}$10√2
ج-$50\sqrt{2}$50√2
د-$100\sqrt{2}$100√2
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
ترك جسم كتلته كجم ليهبط من السكون على خط اكبر ميل لمستوى خشن يميل
على الافقى بزاوية جيبها $\frac{3}{5}$35 .
اذا اصبحت سرعة الجسم 4.9 م / ث بعد 2.5 ث من بدء الحركة فاوجد معامل
الاحتكاك الحركى بين الجسم المستوى
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
جسم كتلته ك = $\left(2ن\ +\ 5\right)$(2ن + 5) كجم ومتجه موضعه $\overline{ر}\ =\ \left(\frac{1}{2}\ ن2\ +\ ن\ -\ 5\ \right)\ \overline{ى}$ر = (12 ن2 + ن − 5 ) ى حيث $\ \overline{ى}$ ى متجه وحدة ثابت , الازاحة مقاسة بالمتر , ن بالثانية اوجد :
ا- متجهى السرعة والعجلة عند اى لحظة زمنية ن .
ب- مقدار القوة المؤثرة على الجسم عند ن = 10 ث .
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
سيارة وزنها 6 ث طن تصعد منحدرا يميل على الافقى بزاوية قياسها 30 متحركة
فى خط مستقيم , فاذا كانت المقاومة لحركة السيارة تساوى 194 نيوتن لكل طن
من كتلة السيارة , فان مقدار قوة محرك السيارة يساوى ............................ ث كجم
ا- 4764
ب- 6180
ج- 3294
د-3180
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
اذا طلقت رصاصة كتلتها 98 جم افقيا بسرعة 200 م / ث على حاجز خشبى راسى فاستقرت فيه وكانت مقاومة الخشب للرصاصة ثابتة وتساوى 400 ث كجم فان المسافة التي تغوصها الرصاص داخل الحاجز قبل ان تسكن تساوى ...... سم .
ا- 100
ب- 98
ج- 50
د- 392
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
جسم كتلته 500 جم يسقط من ارتفاع 4.9 متر عن سطح الارض فتكون كمية
حركته لحظة وصوله للارض مساوية ................ كجم م / ث
ا- 2.45
ب- 4.9
ج- 2450
د- 4900
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................