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Chapter 5 Vocabulary
Term | Definition |
---|---|
motion | objects change in position relative to a reference point |
speed | distance divided by time during which the motion occurred |
velocity | the speed of an object in a certain direction |
acceleration | the rate at which velocity changes over time |
force | push or pull on an object to change the motion of an object |
newton | the SI unit for force |
net force | combination of all forces acting on an object |
friction | force that opposes motion between 2 surfaces that are in contact |
gravity | a force of attraction between objects that is due to there masses |
weight | measure of gravitational force exerted on an object |
mass | measure of the amount of matter in an object |