In the US customary system, horsepower is a unit of what physical quantity?

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Multiple Choice

In the US customary system, horsepower is a unit of what physical quantity?

Explanation:
Power is the rate at which work is done or energy is transferred. Horsepower, in the US customary system, is a unit of this rate. It expresses how quickly a machine can perform work, not how much mass there is, how far something moves, or how long something runs. One horsepower is defined as 550 foot-pounds of work per second, which is about 745.7 watts. So stating a motor has a certain horsepower tells you how fast it can do work, rather than the amount of matter, distance, or time alone.

Power is the rate at which work is done or energy is transferred. Horsepower, in the US customary system, is a unit of this rate. It expresses how quickly a machine can perform work, not how much mass there is, how far something moves, or how long something runs. One horsepower is defined as 550 foot-pounds of work per second, which is about 745.7 watts. So stating a motor has a certain horsepower tells you how fast it can do work, rather than the amount of matter, distance, or time alone.

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