Sprint 63 · Chapter 5

Power: How Fast Work Is Done

Measure how fast work is done: P = dW/dt = F·v. Use watts, horsepower, kilowatt-hours and efficiency.

1. 1Work per Second, Force Times Velocity
2. 2Powering the Elevator
3. 3Your Turn: A Smaller Lift
4. 4The Water Pump
5. 5Exercises 5.9 and 5.10