Forces and Equilibrium

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Enduring Understandings

• There are two types of forces in nature: contact and field forces.
• Force is a vector quantity.
• Newton’s first law of motion or Law of Inertia
  
• Newton’s third law of motion
  
• Zero net force on an object results in an equilibrium state.
  
• Forces in nature always come in pairs.
  
• A force diagram illustrates forces that act on an object in both size and direction.
  
• Forces cause changes in motion.
  

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Links and Documents