Physics

Problem

4\,\text{kg}

trolley travelling at

10\,\text{m\,s}^{-1}

collides head-on with a

2\,\text{kg}

trolley moving in the opposite direction at

4\,\text{m\,s}^{-1}

. If the coefficient of restitution is

0.5

, calculate the loss of kinetic energy during the collision. a)

84\,\text{J}

132\,\text{J}

65\,\text{J}

98\,\text{J}