click below
click below
Normal Size Small Size show me how
Chapter 2 vocabulary
| Term | Definition |
|---|---|
| distance | how far an object moves |
| displacement | distance and direction of an object's change in position from the starting point |
| speed | distance an object travels per unit of time |
| average speed | total distance an object travels divided by the total time it takes to travel that distance |
| instantaneous speed | speed of an object at a given point in time; is constant for an object moving with constatn speed, and changes with time for an object that is slowing down or speeding up |
| velocity | the speed and direction of a moving object |
| acceleration | rate of change of velocity' can be calculated by dividing the change in the velocity by the time it takes the change to occur |
| force | a push or pull exerted on an object |
| net force | sum of the forces that are acting on an object |
| balanced force | forces on a object that combine to give a zero net force and do not change the motion of the object |
| inertia | resistance of an object to a change in its motion |