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Question

A body goes from C to D with a velocity of 20 m/s and comes back from D to C with a velocity of 30 m/s. The average velocity of the body during the whole journey is:


A

25 m/s

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B

Zero

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C

24 m/s

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D

26 m/s

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Solution

The correct option is B

Zero


Average velocity is given by Total displacementTotal time

In this case, as the body comes back to the initial point, the net displacement is zero. So, average velocity = 0.


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