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A particle moves with a speed v in a cir...

A particle moves with a speed v in a circle of radius R.The x-component of the average velocity of the particle in a half- revolution, as shown in figure`-3.76`,is:

A

`-(v)/(pi)`

B

`-(v)/(2pi)`

C

`-(v)/(4pi)`

D

`-(2v)/(pi)`

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The correct Answer is:
A
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