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# PS Ch 2

distance how far an object moves
displacement distance and direction of an objects change in position from the starting point
speed distance an object travels per unit of time
average speed total distance an object travel 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 rime 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
Created by: mariannareyes