Power

Definition

The power due to an applied force is defined as the work done by that force per unit time. Instantaneous power refers to the differential of the work done with respect to time, and average power over a time period refers to the ratio of the total work done to the total time.

Units and dimensions

The MLT dimensions of power are $ML^{2}T^{-3}$. The SI units are $J/s$ or Joules/second, or $kgm^{2}/s^{3}$, or kilograms meter squared per second cubed.