A car travels due north in and then due south in

PHYSICS · Single correct · CBSE · Physics · Motion · Motion

Problem

A car travels

50\,\text{km}

due north in

1.0\,\text{h}

and then

30\,\text{km}

due south in

45\,\text{min}

. What is the magnitude of its average velocity for the whole trip? (a)

28.6\,\text{km}\,\text{h}^{-1}

(b)

45.7\,\text{km}\,\text{h}^{-1}

(c)

11.4\,\text{km}\,\text{h}^{-1}

(d)

13.8\,\text{km}\,\text{h}^{-1}

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