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The position (x) of body moving along x-...

The position (x) of body moving along x-axis at time (t) is given by `x=3f^(2)` where x is in matre and t is in second. If mass of body is 2 kg, then find the instantaneous power delivered to body by force acting on it at `t=4` s.

A

288 W

B

280 W

C

290 W

D

None

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The correct Answer is:
A
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