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Matter in Motion

Chapter 5 Vocabulary

TermDefinition
Motion An object change in position relative to a reference point
Speed The distance traveled divided by time interval during which motion occurred
Velocity The speed of an object in a particular direction
Acceleration The rate at which velocity changes over time; an object accelerates if its speed, direction, or both change.
Force A push or pull exerted on an object in order to change the motion of the object; force has size and direction
Newton The SI unit for force
Net force The combination of all of the forces acting on an object1
Friction A force that opposes motion between two surfaces that are in contact
Gravity A force of attraction between objects that is due to their masses
Weight A measure of the gravitational force on an object.
Mass The amount of matter in an object
Created by: Shania Franks
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