A person walks along an east-west street and a graph of his displacement from home is shown in figure. His average velocity for the whole time interval is

0 m s^{- 1}

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23 m s^{- 1}

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8.4 m s^{- 1}

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None of above

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Solution

The correct option is A $0 m s^{- 1}$
Net displacement of the particle is zero i.e $S = 0$ over the whole time.
$∴$ Average velocity $v_{a v g} = \frac{S}{t} = 0$

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