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| any push or pull that causes an object to move, stop, or change directions. |
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| a force that opposes, or acts against, motion when two surfaces rub against each other. |
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| the force of repulsion ( pushing) or attraction ( pulling) between poles of magnets. |
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| the force that pulls all objects in the universe toward one another. |
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| What 3 forces affect Earth and objects on Earth every day? |
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| equal in size and opposite in direction. They cancel each other out. |
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| occur when one force is greater than its opposite force. |
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| unbalanced forces act on an object, the object starts to move, speeds up, slows down, stops, or changes direction. |
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| adding or subtracting the individual forces gives a value |
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| the use of a force tomove an object through a distance. |
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| the amount of work done for each unit of time. |
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| something that makes work seem easier by changing the size or the direction of a force. |
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| When a leaf falls from a tree, the force actionon the leaaf is |
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