At any instant of time $t$, the displacement of any particle is given by $2t - 1$ (SI unit) under th

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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 5 N . The value of instantaneous power is (in SI unit):

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Sol. [Key Concept: Kinematics/SHM from the displacement equation] $$x = 2t - 1$$$$\begin{matrix} v & \ = \frac{dx}{dt} = 2	ext{ }m{	ext{ }s}^{- 1} \ P & \ = F.v \ & \ = 2 	imes 5 = 10	ext{ }W \end{matrix}$$

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