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A particle moves with a velocity v=(5hat...

A particle moves with a velocity `v=(5hati-3hatj + 6hatk) ms^(-1)` under the influence of a constant force
`F =(10hati + 10hatj + 20hath) N`, the instantaneous power applied to the particle is.

A

200W

B

320W

C

140W

D

170W

Text Solution

Verified by Experts

The correct Answer is:
C
`P_(inst) =vecF.vecV =(10 hati + 10hatj +20hatk).(5 hati - 3 hatj + 6 hatk )`
`140 W`
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