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science chapter 9

motion

QuestionAnswer
motion the state in which one object's distance from another is changing
reference point a place or object used for comparison to determine if an object is in motion
international system of units the system of units used by scientists to measure the properties of matter
meter the basic SI unit of length
speed the distance an object travels per unit of time
average speed the overall rate of speed at which an object moves
instantaneous speed the speed of an object at one distant of time
velocity speed in a given direction
slope the steepness of a line on a graph, equal to its vertical change divided by its horizontal change
acceleration the rate at which velocity changes
Created by: 088103
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