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Q.

A car travels a distance S, on a straight road in 2 hours and then returns to the starting point in the next three hours. Its average velocity is

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a

$\frac{2S}{5}$

b

Zero

c

$\frac{S}{2} + \frac{S}{3}$

d

$\frac{S}{5}$

answer is D.

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Detailed Solution

As the $\vec{S} = 0$

$Average velocity = 0$

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