Physics

Problem

A person walks

60\,\text{m}

east in

1\,\text{min}

and then

80\,\text{m}

north in the next

2\,\text{min}

. What is the magnitude of the person's average velocity for the entire

3\,\text{min}

interval? a)

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

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

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

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