In physics, Power () is the rate at which work is done (or energy is transferred) over time (). Recall that work is a change in energy, therefore Power is the change in energy () over the change in time, or .
Power is measured in watts. One watt is equal to 1 joule per second, or .
Power can also be expressed as as the product of force () and velocity (), or , because force is energy transferred to an object (a change in energy) and velocity is the change in position over time (a change in time).
Video: Power - Physics 101 / AP Physics Review
Deeper Knowledge on Power (Physics)
Watt's Law (Power Law)
A formula to define the relationship between power, voltage, and current (P=IV)
Broader Topics Related to Power (Physics)
The fundamental nature and properties of matter, energy, and motion