A ball of mass 5.0 kg moving with speed of 2.0 m/s in the +x-direction hits a wall and bounces back with the same speed in the -x-direction. What is the change of momentum of the ball?

Answer 1

ball of mass 0.3 kg moving with a
speed of 6.0 ms-1strikes a wall at an
angle of 60° to the wall. It then
rebounds at the same speed and the
same angle. It is in contact with the
wall for 10 ms. Calculate the impulse
and the average force. 2 +2
(ii) A particle's kinetic energy