يعني الحين دايم نعوض بالقيمة المطلوبة وقيمة اقل منها بواحد ؟
طيب سؤال ثاني
a stone is dropped vertically downwards from a height h if the stone reaches a height of 10 m above the ground in 2 s . the height h is :
4.9m
9.6m
19.6m
29.6m
10m
سؤال اخر
a boy shot a football vertically up with an initial speed Vo . when the ball was 2 m above the ground ,the speed was 0.4 of the initial speed.the initial, speed is:
6.8m
3.4m
11.8m
4.8m
19.6m