Chapter 1 - section 2: Gravity and Motion
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Mccaffrey5 Teacher on September 10, 2011
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Section 2: Gravity and Motion
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9 terms
Terms | Definitions |
|---|---|
 Force | a push or a pull exerted on an object. |
| Gravity | The attractive force between objects; its strength depends on their masses and the distance between them. |
| Law of Universal Gravitation | The scientific law that states that every object in the universe attracts every other object. |
| Mass | The amount of matter in an object. |
| weight | The force of gravity on an object. |
| inertia | The tendency of an object to resist a change in motion. |
| Newtown's first law of motion | The scientific law that states that an object at rest will stay at rest and an object in motion will stay in motion with a constant speed and direction unless acted on by a force. |
| The strength of the force of gravity between two objects depends on two factors: | The masses of the objects and the distance between them. |
| Name the two facts that Newton concluded to keep Earth in orbit around the sun and the moon in orbit around Earth | inertia and gravity |
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