Question

A ball after falling a distance collides an inclined plane of inclination θ. If after the collision, the ball moves horizontally, find the coefficient of restitution

Answer 1

explanation;

the initial velocity and final velocity direction of the ball is in consideration is in opposite direction

Vfinal of ball=(-v) and Vinitial =v

1=ball and 2= inclined plane

inclined plane is at rest v=0

for which e=(-v)-0/v-0

                  =-1