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Ch.5
Ch.5 vocbulary
| Term | Definition |
|---|---|
| Motion | an object's change in position relative to a reference point. |
| Speed | the distance travel by the time interval during which the motion occurred |
| Velocity | the speed of an object in a particular direction |
| Acceleration | the rate at which velocity changes over time;an object accelerates if its speed,direction,or both change |
| Force | a push or pull of motion |
| Newton | the unit for force |
| Net force | the combination of all of the forces acting on a object |
| Friction | a force that opposes motion between two surfaces |
| Gravity | a force that attracts objects to its surface |
| Weight | a measure of gravity on a object |
| Mass | the amount of matter in a object |