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A boy is running over a circular track w...

A boy is running over a circular track with uniform speed of `10 ms^(-1)`. What is the average velocity for movement of boy from A to B (in `ms^(-1)`) ?

A

`(10)/(pi)`

B

`(40)/(pi)`

C

10

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
`upsilon_(av)=("Displacement")/("Time")=(2R)/((piR//upsilon))=(2upsilon)/(pi)=(20)/(pi)ms^(-1)`
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