A student walks 150 m north at and then walks back 150 m south at

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

Problem

A student walks 150 m north at

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

and then walks back 150 m south at

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

. Calculate the average speed for the entire walk. (a)

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

(b)

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

(c)

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

(d)

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

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