Question

A ball of mass 0.5kg is struck by a hockey stick so as to rebound along its original path with same speed in 1 sec. If the initial speed of ball is 2m/s then calculate the force exerted on the ball.

Answer 1

as the ball rebound it means that it changes direction but speed remains same
a=v-u/t
=2-(-2)/1
=4
F=ma
=0.5×4
=2
I hope it will help