A car of mass changes its velocity from eastward to westward in

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

Problem

A car of mass

1200\,\text{kg}

changes its velocity from

20\,\text{m/s}

eastward to

5\,\text{m/s}

westward in

0.20\,\text{s}

. Determine the impulse delivered to the car (magnitude and direction). (a)

3.0\times10^{4}\,\text{kg m/s}

towards east (b)

1.8\times10^{4}\,\text{kg m/s}

towards west (c)

3.0\times10^{4}\,\text{kg m/s}

towards west (d)

2.5\times10^{4}\,\text{kg m/s}

towards west