Free AP Physics C lesson

Vectors

This AP Physics C: Mechanics lesson is designed for AP Physics C self-study. It includes 2 video lessons, 6 practice questions, and an estimated completion time of 22 minutes.

Video lessons

  1. A Few Thoughts on Vectors

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  2. Part II: A Few Thoughts on Vectors

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Practice covered

  1. A vector vecA has magnitude 12 m at 45^circ to the positive x-axis. What is the approximate magnitude of its x-component?
  2. A vector vecB can be written as vecB = 3.0 m,hati - 4.0 m,hatj. Calculate the magnitude of this vector (in meters).
  3. Two vectors are given: vecA = 6 m,hati + 2 m,hatj and vecB = -2 m,hati + 5 m,hatj. What is the resultant vector vecR = vecA + vecB?
  4. When you multiply a scalar quantity (like mass m) by a vector quantity (like velocity vecv), what can you conclude about the resulting vector?
  5. An object is moving with velocity vecv and has acceleration veca in the same direction as vecv. What is happening to the object?
  6. An object moves along a curved path at constant speed. What can you conclude about the acceleration?
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