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Watch It Move
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| Forces and Changes |
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| | A strong force makes a thing move faster. A weak force makes a thing move slower. |
| | If the direction of a force changes, a thing moves in a different direction. |
| | If a force stops, a thing slows down and stops. |
| | Friction is the force caused by the rubbing of one thing on another. |
| | Friction slows down the movement of things. |
| | You put what you know about forces to use when you ride a bike. |
