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Lesson 36 Set 1
| Term | Definition |
|---|---|
| Gravity | The force that pulls objects toward the earth. |
| Friction | The force that resists the movement of objects against each other. |
| Effort | The force that causes an object to move. |
| Load | The weight of the object being moved. |
| Motion | A change in position. |
| Machine | An object that makes work easier. |