فيزياء: أي استفسار أول سؤال

[ALI ALZAHRANI]

المشاركة الأصلية كتبت بواسطة cdtoe الـ3 الأسئلة المتبقية من مسائل السقوط الحر والتي قام الدكتور باعطاءها لنا , اتمنى منك حلها لأتاكد من صحة حلي : 1 - a ball is thrown vertically upward . It returns to its starting point after 4 sec . Calculate : A - the initial velocity of the ball b - the maximum height the ball rise ××× 2 - a student threw a set of keys vertically upward to his brother in a window 4.0 m above . The keys are caught 1.5 sec later by the brother's outstretched hand : A - what's the initial velocity when the keys were thrown ? B - what was the velocity of the keys just before they were caught ? ×××× 3 - a ball is thrown vertically upward . It returns to its starting point after 4 sec . Calculate : A - the initial velocity of the ball b - the maximum height the ball rise _______________ شاكر لك مفدما , وأعتذر عن كثرة الأسئلة , أستاذ .

ضع حلك اولا ثم بعدهانصحح الاخطاء ان وج