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JEE PHYSICS MCQ: WORK-ENERGY-POWER

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A motor boat is going in a river with velocity

\vec V = 4\hat i - 2\hat j + \hat k\,m{s^{ - 1}}

. If the resisting force due to stream is

\overrightarrow F = \left( {5\hat i - 10\hat j + 6\hat k} \right)N

, then the power of motor boat is

View answer and explanation

Correct option: C

46 w

The correct answer is C (46 w) because the power is the dot product of the force and velocity vectors.

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