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2.2 Forces and Free-Body Diagrams

Part of Force and Translational Dynamics in AP® Physics C: Mechanics. Read the opening section, then create a free account for the full interactive lesson, practice, and progress tracking.

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A force is defined as an interaction between two objects that can cause a change in motion. It is a vector quantity represented by F{F} and measured in newtons (N).

1,N=1,kg⋅m/s2{1,\text{N} = 1,\text{kg·m/s}^2}

Forces can make an object start moving, stop moving, change direction, or alter its speed.

In this unit

10 lessons

  1. 2.1Systems and Center of MassPreview lesson
  2. 2.2Forces and Free-Body DiagramsThis lesson
  3. 2.3Newton’s Third LawPreview lesson
  4. 2.4Newton’s First LawPreview lesson
  5. 2.5Newton’s Second LawPreview lesson
  6. 2.6Gravitational ForcePreview lesson
  7. 2.7Kinetic and Static FrictionPreview lesson
  8. 2.8Tension/Pulley Systems & Spring ForcesPreview lesson
  9. 2.9Resistive ForcesPreview lesson
  10. 2.10Circular MotionPreview lesson

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