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Chapter 5 Vocabulary
Question | Answer |
---|---|
Motion | an object's change in position relative to a reference point |
Speed | the distance traveled divided by time interval during which the motion occured |
Velocity | the speed of an object in a specific direction |
Acceleration | rate at which velcity changes over timeex: accelerates if it's speed/direction change |
Force | a push or pull exerted on an object in order to change the motion of obj. force has size and direction |
Newton | the SI unit for force (symbol,N) |
Friction | a force that opposes motion between two surfaces that are in contact |
Gravity | a force of attraction between objects that is due to their masses |
Weight | measure of the gravitational force exerted on an object, who's value can change with location |
Mass | amount of matter in an object |
Net Force | combination of all the forces acting on an object |