A moving trolley of mass is brought to rest

PHYSICS · Subjective · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

A moving trolley of mass

5\,\text{kg}

is brought to rest. Explain why the force required is smaller when it is stopped in

4\,\text{s}

than when it is stopped in

0.2\,\text{s}

, with reference to the change of momentum.