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A body of mass 0.5 kg initially at rest is accelerating , due to a time dependent force `[vecF= t hat i + sqrt(t) hat j]` N then instantaneous power developed due to this force at t = 3 s will be

A

29 W

B

39 W

C

49 W

D

59 W

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AAKASH INSTITUTE ENGLISH-MOCK TEST 7-Exercise
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