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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

13 `ms^(-2)`

B

`12 ms^(-2)`

C

7.2 `ms^(-2)`

D

14 `ms^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
D
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