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Question
A football player kicks a 0.8 kg ball and imparts it a velocity of 12 ms-1. The contact between the foot and ball is only for one-sixtieth of a second. Find the average kicking force.
Solution
Given,
Mass of the ball = 0.8 kg
Final velocity (V) =12 ms-1 and time t =`1/60` s
Initial velocity = 0
We know the average kicking force
F = ma = `(m(v–u))/t = (0.8(12−0))/((1/60))`
F = 576 N
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