A force of 2i^+3j^+4k^N acts on a body for 4 second, produces a displacement of (3i^+4j^+5k^)m. The power used is-

(1) 9.5 W

(2) 7.5 W

(3) 6.5 W

(4) 4.5 W

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#9 | Power

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