Ball experiment

Drop the ball

Vi=0.0m/s Vf=? d=2m t=1.2s a=9.8m/s²

Vf²=Vi²+2ad

Vf²=0+2×9.8×2

Vf²=384.16

Vf=6.3m/s

 

Ball throw

Vi=?, Vf=0.0m/s, d=78cm, t=1.1s, a=9.8m/s²

0.78=vi×0.55Vi+1.48

0.78-1.48=0.55Vi

-0.7=0.55Vi

-1.27=Vi

Difficult part; I threw the ball at beside the wall. It was hard for me because a ball hit the wall and ball did not go straight up so I tried many times. Finally I succeeded to threw the ball straight

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