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CH 8 Vocabulary
Term | Definition |
---|---|
Speed | The distance an object moves in a unit of time |
Velocity | The speed and the direction of a moving object |
Acceleration | The measure of the change in velocity during a period of time |
Force | Is a push or a pull on an object |
Contact Force | A push or a pull one object applies to another object that is touching it |
Noncontact Force | A force that one object applies to another object without touching it |
Gravity | An attractive force that exists between all objects that have a mass |
Friction | A contact force that resists the sliding motion of two surfaces that are touching |
Air Resistance | The frictional force between air and objects moving through it |