Chapter Objectives:

• Define force as part of an interaction.
• State Newton's third law of motion.
• Given an action force, identify the reaction force.
• Explain why the accelerations caused by an action force and by a reaction force do not have to be equal.
• Explain why an action force is not canceled by the reaction force.
• Describe the horse-cart problem.
• Explain why you cannot touch without being touched.

Chapter Terms:

• vector
• vector quantity
• scalar quantity
• resultant

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Chapter Outline Framework:

• Forces and Interactions
• Newton's Third Law of Motion
  • Defining Your System
  • Action and Reaction on Different Masses
• Vectors
  • Force Vectors
  • Velocity Vectors
  • Components of Vectors

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