# Shared Flashcard Set

## Details

motion
unit 7 -- physical science
12
Science
02/04/2014

Term
 motion
Definition
 when an object changes position
Term
 frame of a reference/ reference point.
Definition
 any point from which an objects motion can be meausured
Term
 why is a frame of reference imortant to determining motion?
Definition
 our relation to an object in motion affects how we judge the motion of the object.
Term
 distance
Definition
 total length traveled by an object in motion (path matters)
Term
 displacement
Definition
 objects net change is position/ distance between start and end point (path doesn't matter)
Term
 displacement can be a ___ and a ___value
Definition
 displace ment can be a positive and a  negative value
Term
 what 2 factors would be involved when motionn is measured?
Definition
 1: distance 2: time
Term
 speed
Definition
 the measurement of the change in position over a period of time
Term
 speed =
Definition
 distance _________ speed ¦ time
Term
 Distance -time graphs
Definition
 distance is plotted on the y-axis time is plotted on the x-axis
Term
 constant speed/velocity
Definition
 when the speed or velocity of an object does not change over a specific time period.
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