Physics

Problem

Which one of the following gives the instantaneous power

P

for a particle on which a force

\mathbf{F}

acts while it moves with instantaneous velocity

\mathbf{v}

? a)

P=\mathbf{F}\times\mathbf{v}

P=Fv

P=\mathbf{F}\cdot\mathbf{v}

P=\dfrac{\mathbf{F}\cdot\mathbf{s}}{t}