A player transfers a momentum of 12 kg m/s to a ball of mass 400 g which is at rest. Find the work done on the ball.

If there was no gravity then their would be no downword force on the football to have it return the the grownd, and if there was no friction (mainly air friction) then there would be no opposing force the stop the ball from moving through the air allowing the ball to travle ∞.

Wooden , walls ,doors ,support