A car travels north in

PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A car travels

4\,\text{km}

north in

5\,\text{min}

, remains at rest for

2\,\text{min}

, and then travels

3\,\text{km}

south in

4\,\text{min}

, all along the same straight road. Express your answers in

\text{m/s}

. (i) Compute the car’s average speed for the entire trip. (ii) Compute the car’s average velocity (magnitude and direction) for the entire trip.