What is defined as the ability to do work?

What is defined as the ability to do work?

• A. Power
• B. Energy
• C. Force
• D. Work rate

Answer: (B)

The correct choice is energy, which is fundamentally defined as the capacity to perform work. In physics, work is accomplished when a force is applied over a distance, and energy is the measurable quantity that allows this process to occur. Energy can take various forms, such as kinetic, potential, thermal, and chemical, but in all cases, it is the underlying factor that enables work to be done.

In the context of the other options, power refers to the rate at which work is done or energy is transferred over time, not the actual capacity to do work itself. Force is the influence that causes an object to undergo a change in motion, which is necessary for work to be performed but does not itself represent the ability to perform that work. Work rate is similar to power and also indicates the speed at which work is performed. Therefore, while these other terms are related to work, energy is the correct answer as it directly represents the ability to do work.