A ball of mass m collides with the ground at an angle alpha with the vertical. If the collision lasts for time t, the average force exerted by the ground on the ball is : (e = coefficient of restitution between the ball and the ground)

A ball of mass m collides with the ground at an angle alpha with the v

1.	A ball of mass m collides with the ground at an angle alpha with the vertical. If the collision lasts for time t, the average force exerted by the ground on the ball is : (e = coefficient of restitution between the ball and the ground)
Answer» Solution :IMPULSE = CHANGE in LINEAR momentum `thereforeFt = m (eu cos alpha+u cos alpha) or F = (MU cos alpha(1+e))/(t)`