Question

A ball hits a wall horizontally at 6.0 m/s It rebouns horizontally at 4.4 m/s the ball is in contact with wall for 0.040 s What is the acceleration of the ball

Answer 1

initial velocity(v)=6m/s
final velocity(U)=4.4m/s
time =0.040s
accelaration=v-u/t
4.4-6/0.040=-40m/s2=retardation