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forces4
Term | Definition |
---|---|
position | the location of an object |
speed | how far something moves over a certain period of time |
motion | the change of position of an object |
velocity | the speed and direction of an object |
acceleration | a change in the speed or direction of an object |
inertia | property of matter that keeps an object from changing speed or direction unless a force acts on it |
gravity | force that pulls everything toward the Earth |
weight | measure of the gravitational force that pulls on an object |
friction | a force that slows down or stops motion between objects that are touching |
gravitation | a force that acts between all objects and causes them to pull on each other |