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Grade 4 F-2 Sci. Def

Chapter 2 Motion - Forces at Work

TermDefinition
position A certain place
motion A change of position
frame of reference The things around you that you can sense and use to describe motion
relative motion A motion that is described based on a frame of reference
speed A measure of an object's change in position during a unit of time; for example
force A push or pull
newton The metric
acceleration A change in the speed or direction of an object's motion
gravity A force that pulls all objects toward each other
weight A measure of the force of gravity upon an object
friction A force that keeps objects that are touching each other from sliding past each other easily
Created by: scscolts
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