A luggage trolley of mass carries three identical suitcases

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A luggage trolley of mass

20\,\text{kg}

carries three identical suitcases, each of mass

15\,\text{kg}

. The trolley moves at

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

along a smooth platform. Calculate, to two significant figures, the total kinetic energy of the trolley–suitcase system.