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

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.

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.