Energy, Work and Power

Mr. Anderson explains energy, work, and power. Energy is the ability to do work, which is force times distance, measured in joules. He uses a can of Coke to illustrate work, showing that moving it up stairs involves 12 joules of work. Power, the rate of doing work, is measured in watts. He explains that moving the Coke in one second equals 12 watts, while doing it in 10 seconds equals 1.2 watts. Horsepower, used in engines, is about 746 watts. The video concludes by noting that moving the Coke also involves moving one's body weight, indicating more power than calculated.

How is power defined in relation to work and time?

What is the conversion between horsepower and watts?