What is Horsepower?

## Question:

What is the horse power and how do I calculate?
## Answer:

Horsepower is an English engineering unit. It is equal to 550
foot-pounds per second. For example if an automobile requires 100
pounds of force to keep it moving at a constant speed or 50 miles
per hour, the rate at which work is done is 5000 mile-pounds per
hour. To convert this to horsepower we first need to multiply by
the number of feet per mile (5280) and divide by the number of
seconds per hour(3600). This gives us
5000*5280/3600=7333 foot pounds per second. Then divide
this number by 550 to get the actual horsepower. I get about 13.3
horsepower.