A motor boat is going in a river with a ...

A motor boat is going in a river with a velocity `vec(V) = (4 hat i-2 hat j + hat k) ms^(-1)`. If the resisting force due to stream is `vec (F)=(5 hat i-10 hat j+6 hat k)N`, then the power of the motor boat is

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The correct Answer is:

`P=vecF.vecV`

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