Physics

Problem

A runner goes

3\,\text{km}

north at

6\,\text{km/h}

and then

4\,\text{km}

east at

8\,\text{km/h}

. What is the magnitude of his average velocity for the entire trip? a)

8.3\,\text{km/h}

5\,\text{km/h}

10\,\text{km/h}

7\,\text{km/h}