A rubber ball of mass strikes a smooth vertical wall while moving horizontally to the…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A rubber ball of mass

0.1\,\text{kg}

strikes a smooth vertical wall while moving horizontally to the east at

5\,\text{m/s}

. It rebounds horizontally to the west at

4\,\text{m/s}

. If the ball is in contact with the wall for

0.02\,\text{s}

, determine the average force exerted by the wall on the ball. (a)

22.5\,\text{N}

toward the west (b)

45\,\text{N}

toward the west (c)

45\,\text{N}

toward the east (d)

90\,\text{N}

toward the west