8th grade-Ch. 1 Sec. 2 Gravity & Motion

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8th grade-Ch. 1 Sec. 2 Gravity & Motion

  1. 1. Sec. 2 Gravity & Motion
  2. 2. force <ul><ul><li>a push or a pull </li></ul></ul>
  3. 4. gravity <ul><ul><li>force that attracts all objects toward each other </li></ul></ul><ul><ul><li>measured in newtons </li></ul></ul>
  4. 5. <ul><ul><li>mass of objects </li></ul></ul><ul><ul><li>distance between objects </li></ul></ul><ul><li>(force as </li></ul><ul><li>distance ) </li></ul>strength of gravity depends on 2 factors
  5. 6. Newton’s law of universal gravitation <ul><ul><li>every object in universe attracts every other object </li></ul></ul>
  6. 7. mass weight Amount of matter in an object Force of gravity on an object
  7. 9. inertia <ul><ul><li>tendency of an object to resist a change in motion </li></ul></ul><ul><ul><li>ex: egg in glass trick </li></ul></ul>
  8. 10. Isaac Newton
  9. 11. 2 factors that keep Earth in orbit moves Earth in straight line inertia gravity pulls

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