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Forces & Motion
| Term | Definition |
|---|---|
| magnetism | a force that acts at a distance and cannot be seen |
| speed | measure of how fast an object is moving: distance/time |
| friction | force that opposes motion between two surfaces that are touching |
| unbalanced forces | force that may speed an object up, slow it down, or make it change directions |
| force | a push or pull that affects the motion of objects |
| gravity | a pull that attracts objects to each other. This attraction is not noticeable unless one of the objects is very large. |
| balanced forces | forces that are equal in strength but opposite in direction and do not change the motion of objects |
| motion | position, direction, and speed |