رد: فيزياء: أي استفسار أول سؤال
أعطانا الدكتور ورقة فيها 7 مسائل في السقوط الحر , حليت حتى الآن 3 منها , ولكن ابغى اتاكد من الجواب منك :
1 - a ball thrown vertically from the ground level to rise to a maximum height of 50m . What is the initial velocity of the ball ?
2 - a ball thrown vertically upward is caught by the thrower after 20 sec . What is the initial velocity of the ball ?
3 - A stone is dropped from a building at height of 25 m . What's its height when the speed of the stone is 12.6 m/s ?
شكرا مقدما .
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