5th Grade Ch. 13 Lesson 3 What are Newton's laws of motion
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  • 1. Ch. 13 Lesson 3 What are Newton’s laws of motion?
  • 2. net force
    • combination of all forces acting on an object
    • determines whether an object will start moving, stop moving, or change direction
  • 3. equilibrium
    • state when in which all forces acting on an object are in balance
  • 4. Newton’s laws of motion Sir Isaac Newton
  • 5.
    • objects at rest tend to remain at rest & objects in motion tend to stay in motion unless a net force acts on it
    1 st law of motion
  • 6. inertia
    • tendency of an object to resist any change in motion
  • 7. examples of inertia
    • quarter on elbow trick (stationary object)
    • passenger in moving car moving forward when car stops (remain in motion)
  • 8. passenger & luggage in moving car moving forward when car stops (remain in motion)
  • 9. 2 nd law of motion
    • motion of an object changes only when some force acts on the object
  • 10. acceleration
    • rate @ which velocity of an object changes over time
  • 11.
    • A force must be applied to an object to make it start moving, stop moving, speed up, slow down, or change direction.
  • 12. 3 rd law of motion
    • For every action force there is an equal & opposite reaction force.
    • Forces (action force & reaction force) always occur in pairs
  • 13. Name that law !
  • 14. 2 nd law of motion
    • motion of an object changes only when some force acts on the object
  • 15.
    • objects at rest tend to remain at rest & objects in motion tend to stay in motion unless a net force acts on it
    1 st law of motion
  • 16. 3 rd law of motion
    • For every action force there is an equal & opposite reaction force.
    • Forces (action force & reaction force) always occur in pairs
  • 17. 1st law of motion
  • 18.
    • inertia= tendency of an object to resist any change in motion
    1 st law of motion
  • 19. 2 nd law of motion
    • Acceleration-rate @ which velocity of an object changes over time