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# PS Ch2

### Vocabulary

TermDefinition
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 an 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.
Created by: Kimberlysparks