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S8P5
recognize that every object exerts gravitational force on every other object
| Term | Definition |
|---|---|
| law of universe gravitation | states that the force of gravity acts between all objects in the universe. |
| mass | a measure of the amount of matter in an object |
| Newton's first law of motion | states that an object at rest will stay at rest and an object in motion will stay in motion unless an unbalances force acts on the object |