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A point P moves in counter-clockwise dir...

A point P moves in counter-clockwise direction on figure. The movement of P is such that it sweeps out a length `s=t^(3)+5`, where s is in metre and t is in second. The radius of the pathh is 20 m. the acceleration of P when t=2s is nearly

A

`14m//s^(2)`

B

`13m//s^(2)`

C

`12m//s^(2)`

D

`7.2m//s^(2)`

Text Solution

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The correct Answer is:
A
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