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Motion
Chapter 5 Science Vocabulary
Term | Definition |
---|---|
motion | when an object changes position over time relative to a reference point |
speed | the distance traveled by an object divided by the time taken to travel the distance |
velocity | the speed of an object in a particular direction |
acceleration | the rate at which velocity changes |
newton | unit used to measure force |
net force | combination of forces acting on an object |
friction | a force that opposes motion between objects that are in contact |
gravity | the force of attraction between objects that is due to their masses |
weight | the measure of the gravitational force on an object |
mass | the amount of matter in an object |
force | a push or pull |