Chapter 5 Physics Vocabulary

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10 Terms

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vector

a quantity that has magnitude and direction

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components

projections of a vector parallel to the x-axis and another parallel to the y-axis

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vector resolution

the process of breaking a vector into its components

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force

push or pull exerted on an object

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kinetic friction

the force exerted on one surface by a second surface when the two surfaces rub against each other because one or both of the surfaces are moving

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static friction

the force exerted on one surface by a second surface when there is no motion between the two surfaces

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coefficient of kinetic friction

the slope of a line on a kinetic friction force v. normal force graph, μk. relates frictional force to normal force and depends on the two surfaces in contact

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coefficient of static friction

a dimensionless constant depending on the two surfaces in contact. it is used to calculate the maximum static frictional force that needs to be overcome before motion begins

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equilibrium

the condition in which the net force on an object is zero

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equilibrant

a force that places an object in equilibrium; the same magnitude as the resultant but opposite in direction