Which of the following formulas represents power?

Power is defined as the rate at which work is done or energy is transferred over time. The formula that accurately represents this relationship is work divided by time. In other words, if you know the amount of work completed and the time it took to complete that work, you can determine the power output by using this formula.

For instance, if a certain amount of work measured in joules is performed in seconds, dividing the work by the time gives you the power in watts. This fundamental concept is key in understanding how energy is utilized and converted in various physical systems.

Other options, while related to physical concepts, do not define power. Distance divided by time gives you speed, mass multiplied by acceleration relates to force according to Newton's second law of motion, and force multiplied by distance calculates work done. Therefore, the selection of work divided by time as the formula for power is grounded in its definition and application in physics.