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phy sci aol

vocabulary

QuestionAnswer
motion objects change in position relative to a reference point
frame of reference system for specifying the precise location of objects in space and time
displacement change in position of an object
speed distance travelled divided by the time interval during which the motion occurred
velocity the speed of something in a certain direction
acceleration rate at which velocity changes over time; an object accelerates if its speed, direction, or both change
force action exerted on a body in order to change the body's state of rest or motion; has magnitude and direction
friction force that opposes motion
static friction force that resists the initiation of sliding motion between 2 surfaces that are in contact and at rest
kinetic friction force that opposes the movement of 2 surfaces that are in contacts and are moving over each other
Created by: diva626
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