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Motion Vocab Quiz
Vocab
| Question | Answer |
|---|---|
| an object's change in position over time when compared with a reference point | motion |
| the speed of an object in a particular direction | velocity |
| the rate at which an object moves; depends on the distance traveled and the time taken to travel that distance | speed |
| the rate at which velocity changes; occurs if speed and/or direction change | acceleration |
| a push or pull that has size and direction | force |
| the SI unit of force | newton |
| a measure of the gravitational force exerted on an object, usually by the Earth | weight |
| the amount of matter that something is made of | mass |
| a force of attraction between objects that is due to their masses | gravity |
| a force that opposes motion between two surfaces that are touching | friction |
| the force that results from combining all the forces exerted on an object | net force |