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Physical Science V
Vocabulary
| Term | Definition |
|---|---|
| Simple machines | Make work easy |
| Mass | The amount of matter that makes up an object |
| Force | A push or pull |
| Friction | A force that causes objects in motion to speed up or slow down when two surfaces rub together |
| Speed | A measure of how far an object moves in a certain amount of time |
| Motion | Movemenr, or change in an objects position |
| Position | The place where an object is located |
| Gravity | A force that pulls things toward the earth |