Question

A ball of mass 0.5 kg collides with a wall at a speed of 15.0 ms−1 and bounces back with

a speed of 12.5 ms−1

. If the average force exerted by the ball is 1100 N calculate the

impulse and the time for which the collision lasted

Answer 1

impulse generated = m(v-u) impulse= 1.25m/s
time = impulse/ force = 1.25/1100 = 0.001s