A force of 100N was used to kick a football of mass 0.8kg. Find the velocity with which the ball moves if it takes 0.8s to be kicked
a
\(32ms^{-1} \)
b
\(50ms^{-1} \)
c
\(64ms^{-1} \)
d
\(100ms^{-1} \)
Explanation
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DominicAfam
1 year ago
F=100N
m=0.8kg
t=0.8s
V=? š
F=ma
100=0.8a
Divide both side by 0.8
a=100/0.8
a=125
V=u+at
V=0+(125Ć0.8)
V=125Ć0.8
V=100m/s š
āļø
fundkid
10 years ago
F= ma = m*v/t : F =mv/t cross multiply and make v the subject of the formula Mv = Ft : V = Ft/m v = 100 * 0.8/0.8 = 80/0.8 = 100m/s
