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Chapter 5 Flashcards

QuestionAnswer
What is motion? an object's change in position relative to a reference point
What is speed? the distance traveled divided by the time interval during which the motion occurred
What is velocity? the speed of an object in a particular direction
What is acceleration? the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change
What is a force? a push or pull
How do scientists express force? in units called Newtons (N)
What is net force? the combination of all of the forces acting on an object
What is friction? a force that opposes motion between 2 surfaces that are in contact
What are the 2 types of friction? kinetic friction and static friction
What is gravity? a force of attraction between objects that is due to their masses
What is weight? a measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe
What is mass? a measure of the amount of matter in an object
Created by: mmiicchheellee
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