Question

A football player kicks the 1 kg ball and imparts it a velocity of 13ms-1 .The contact between the foot and
the ball is only for 0.2 second. Find the average kicking force?​

Answer 1

Answer:

$f = \: \frac{change \: in \: mometum}{t} \\ f \: = \frac{mass \: \times velocity}{time} \\ f = \frac{mss \times (vf - vi)}{t} \\ 1 \times (13 - 0) \div 0.2 \\ 65n$

kicking force is 65N

or

$p \: = m \times v \\ 1 \times 13 \: \\ 13\\ f \: = change \: inmomemtum \div time \\ 13 \div 0.2 \\ 65$