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# 5th Grade Ch. 13 Lesson 3 What are Newton's laws of motion

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### 5th Grade Ch. 13 Lesson 3 What are Newton's laws of motion

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