Free AP Physics C lesson

Work by Forces

This AP Physics C: Mechanics lesson is designed for AP Physics C self-study. It includes 2 video lessons, 5 practice questions, and an estimated completion time of 16 minutes.

Video lessons

  1. Work Done on an Object by a Constant Force

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  2. Work Done on an Object by a Varying Force

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Practice covered

  1. A constant force of 8 N acts on an object at an angle of 60^circ to its displacement of 5 m. What is the work done by this force?
  2. An object moves in uniform circular motion at constant speed. What is the work done by the centripetal force during one complete revolution?
  3. A force of 15 N acts directly opposite to an object's displacement of 3 m. Calculate the work done by this force (in J).
  4. A varying force F(x) = 4x acts on an object as it moves from x = 0 to x = 3 m. Which expression correctly represents the work done?
  5. A force varies with position as F(x) = 6x^2 (in newtons, with x in meters). Calculate the work done (in J) as an object moves from x = 1 m to x = 2 m.
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