Question

A ball of mass 0.05 kg strikes a smooth wall normally four times in 2 seconds with a velocity of 10 m/s. Each time the ball rebounds with the same speed of 10 m/s. Calculate the average force on the wall.

Answer 1

Ft = mv - mu

Where Ft = Impulse (I)

I = mv - mu

hint: since rebounding velocity is the same as initial velocity

Answer 2

i require the solution ...

Answer 3

zero--no force