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PS ch2
Vocab
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 constant 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 |