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"Exploring the Power of Horses: How Much Horsepower Does a Horse Have?" 

The concept of how much horsepower does a horse have was originally introduced by engineer James Watt in the 18th century to compare the power output of steam engines to that of horses. He determined that an average horse could exert the equivalent power of 550 foot-pounds per second, which became the standard unit of measurement for horsepower.

In modern terms, one horsepower is equal to approximately 745.7 watts or 0.986 horsepower metric. However, it's essential to note that the power output of a horse can vary depending on several factors, such as breed, age, fitness, and individual capability.