A force of 10N is applied on a body for 3 sec and the corresponding displacement 6 m.

A force of 10N is applied on a body for 3 sec and the corresponding displacement 6 m. The power of the source is

(a) 20 W
(b) 25 W
(c) 40 W
(d) 50 W

20 W

Velocity, v = displacement / time = 6/3 = 2 m/s

.·. Power, P = Fv = 10 × 2 = 20 W

OA2006

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