a ball of mass 4kg falls to the floor; it lands with aspeed of 6 m/s. it bounce s off with the same speed. show that it's momentum has changed by 48 m/s.

Answer 1

Momentum = mass x velocity

Initial momentum = 4kg x 6 m/s = 24 kg m/s

Final momentum = 4kg x 6 m/s = 24 kg m/s

Change in momentum = Final momentum - Initial momentum

Change in momentum = 24 kg m/s - 24 kg m/s = 0 kg m/s

Therefore, the momentum of the ball has not changed by 48 m/s.