A small metal ball falls vertically and strickes a smooth plane inclined at an angle `theta` to the horizontal `(theta lt 45^(@))`. The ball rebounds horizontally. Show that a fraction (l-e) of the kinetic energy is lost during the impact and that if m is the mass and `mu` the speed of the ball before impact, the impulse on the plane is `mu sec theta`. Here e isi the coefficient of restitutuon.

Answer

N//a