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Force and Motion
4-22-14
Term | Definition |
---|---|
force | A push or pull. |
mass | The amount of matter in an object or substance. |
gravity | The force that pulls objects toward each other. |
speed | The distance an object moves per unit of time, such as miles per hour. |
position | A certain place, described in comparison to another place. |
motion | A change in the position of an object. |
acceleration | A change in an object's speed or direction. |
weight | A measure of the pull of gravity on an object. |