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Stack #4618496
| Question | Answer |
|---|---|
| displacement | the difference between the initial or starting position and the final position. |
| speed | a measure of the distance an abject travels in a given amount of time |
| velocity | is the speed and derection of a moving object |
| vector | a quantity that has both mangatude and derection |
| acceleration | a measure of the change in velocity during a period of time. |
| force | is a push or a pull on an object |
| contact force | isa a push or a pull on one object by another object by touching it. |
| newtons second law | states the acceleration of an object equals the net force on the object divided by its mass |
| fritction | is a force that resists the sliding of two surface that are touching |
| free body diagram | is a simple model to under stand systems with objects with anyamount of applied forces. |
| net force | is the sum of all the forces acting on an object |
| newtons first law | states that an object in motion will stay in motion and an object at rest will stay at rest unless acted on by a force. |