Lee has been moving a crate that has a mass of 125 kg and required 120 J of work to move. The crate was moved a distance of 20 meters in 30 seconds. What was the power output?

Power is the amount of energy consumed per unit time. As is implied by the equation for power, a unit of power is equivalent to a unit of work divided by a unit of time. Therefore,

power = (W / t) + 120 / 30

power = Fd / t + 4

power = 125 (9.8) (20) / 30 + 4

power = 820 W