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| Change in position compared to a reference point. |
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| Rate of change in position. How quickly or slowly you are moving. |
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| Speed plus direction. Velocity is a vector and it must include direction. |
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| An object used to determine the motion of other objects. |
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| When an object's rate of change in position remains the same. Same speed over a long period of time. |
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| The average rate of change in position. Average speed = distance traveled /time. |
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| The rate of change in position at any given moment. The speed at this moment. |
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| The SI unit of force. The amount of force needed to accelerate a 1 kg object at 1 m/s2. |
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| The sum of all the forces acting on a particular object. |
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| A force opposing the motion between 2 surfaces. |
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| friciton between 2 things that are moving relative to each other. |
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| The force that must be overcome to get an object moving. |
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| A force of attraction between any 2 objects. |
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Definition
| A measure of the force of gravity on an object. |
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| The amount of matter in an object. |
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