Learning Objectives:

  • Infer that forces cause objects to move in the same direction as the direction that the force is applied;
  • Determine the effect of different surfaces on the size of frictional forces;
  • Enumerate ways of reducing and increasing friction;
  • Identify the effects of gravity on the behaviors of materials and objects on Earth in predictable ways;
  • Explain why heavier objects will fall faster than lighter objects due to the force of gravity
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