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Randolph 4th Motion
4th Grade Harcourt Science Unit F Chapter 2 Motion-Forces @ wk
Word | Definition |
---|---|
relative motion | motion that is described based on a frame of reference |
motion | any change of position |
acceleration | change in the speed or direction of an object's motion |
gravity | force that pulls all objects toward each other |
position | describes a certain place |
force | any push or pull |
newton | metric unit of force |
frame of reference | things around you that you use to describe motion |
speed | measure of an object's change of position during a unit of time |
weight | measure of the force of gravity on an object |
friction | force that keeps two objects that are touching from easily sliding past each other |