What is the formula for power as described in the material?

• A. Power = Work / Time
• B. Power = Distance / Time
• C. Power = Mass x Acceleration
• D. Power = Force x Distance / Time

Answer: (D)

Power measures how fast work is done. When a constant force moves an object a certain distance in a given time, the work done is the force times that distance (W = F × d). Power is the rate at which that work occurs, so P = W / t = (F × d) / t. This matches the material’s formula and directly shows how the components—force, distance, and time—combine to describe the energy transfer per unit time. Distances over time alone describes speed, not power; mass times acceleration gives force, not power; and using work over time is equivalent but the form with force and distance highlights how the energy transfer depends on both the force applied and how far it acts.