Horsepower
We've used horsepower since the dawn of time. While the horse fell from favor a couple hundred years ago we still use the term when talking about the power output of an engine or motor. An average work horse achieves a maximum of just under 15 hp at a sprint, while a human at peak production achieves around five horsepower. Interestingly, a horse exerting 1 horsepower can lift 330 pounds of coal 100 feet per minute, 33 pounds of coal 1000 feet in one minute, or 1000 pounds 33