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| What every motion is started with. |
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| The measure of how fast something moves over a certain distance. |
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| The force that pulls objects toward each other. |
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| A measure of the pull of gravity on an object. |
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| The measure of force it takes to move an object a certain distance. |
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| A tool that helps people do work. |
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| What are the six simple machines? |
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| lever, pulley, wheel & axle, inclined plane, wedge and screw. |
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| A bar that moves on or around a fixed point. |
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| A flat surface set at an angle to another surface. |
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