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a rate at witch velococity changes over time an object accelerates if it's speed, direction, or both change.

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the speed of an object's direction

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the time and distance an object takes.

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a measure of the gravatational force exerted on an object, changes for gravity.

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a measure of the amount of matter that takes up an object.

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a force that opposes motion between two surfaces that are in contact

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a push or pull excerted on an object

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The SI unit for force.

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the attraction of mass between the ground, and space.

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static friction is when fricton is stationary.

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there are two types of friction, static, and kinetic

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net force is the force between objects. example two girls pull a rope over molkten lave, and side a has 890687930293487654738928376473892837467839 newtons to the left, while side b has 1 newton to the right, so side a wins.

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kinetic friction between two moving forces

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chapters 1-4