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Main » Mechanical Energy » Power Mechanical Energy


Learning Objectives:

  1. Define power and horsepower.
  2. Sate the SI unit for power(watt) as well as the horsepower.
  3. Solve problems involving work, power and energy.

Lessons Questions
Online Activities

Key Concepts:

In this unit students will increase their abilities to:

  • Power is the rate at which work is done.
  • The SI unit for power is the watt. 1J/s = 1W
  • The power produced by a moving object can be calculated using .
  • A non-SI unit for measuring power, which is still commonly used, is the horsepower [1 horsepower = 746 watts].

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