A job is done slowly, and an identical job is done quickly. B Power refers to the rate at which work is done. The equation can be used for these two motions to find the work. A 50 kg sack is lifted 2 meters in the same time as a 25 kg sack is lifted 4 meters. The power is the rate at which work is done.
Power is found by dividing work by time.
Thus, the power is the same for both tasks. Using 1000 J of work, a toy elevator is raised from the ground floor to the second floor in 20 seconds.