1.

A football player kicks a 0.8 kg ball and imparts it a velocity 12 ms^(-1) the contact between the foot and ball is onlyfor one sixtieth ofa second find the average kicking force

Answer»

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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