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Work, Energy and Power
Instantaneous Power
1 question from 1 paper, each with its answer.
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Concepts tested
- Instantaneous power from displacement-time relation
All Questions
2024 1 question
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At any instant of time $t$, the displacement of any particle is given by $2t-1$ (SI unit) under the influence of force of 5N. The value of instantaneous power is (in SI unit):Instantaneous velocity $v = \frac{ds}{dt} = \frac{d}{dt}(2t - 1) = 2\ ms^{-1}$ Instantaneous power $P = Fv = 5 \times 2 = 10$ W