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After this lesson, you should be able to:

  • Define power as the rate of doing work and as the rate of energy transfer
  • Express the power of an object in terms of the speed of the object
  • Distinguish between average power and minimum or maximum power
  • Explain why engines come with a power rating
  • Define efficiency of an engine
  • Calculate the power required or the power output of objects, including humans, in a variety of scenarios