Physics - 1 Conservation and Dissipation of Energy - 1.5 Kinetic Energy and Elastic Energy Stores

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11 Terms

1
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kinetic energy

the energy an object has due to its motion

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Equation for kinetic energy:

kinetic energy = ½ x mass x speed²

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Kinetic energy is also written as:

Eₖ

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Symbol equation for kinetic energy:

Eₖ = ½mv²

5
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Elastic potential energy

the energy of stretched or compressed objects

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Spring constant

a parameter that is a measure of a spring's resistance to being compressed or stretched

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Hooke's Law

extension is directly proportional to force until the spring reaches its elastic limit

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Hooke's Law equation:

Force = spring constant x extension [F=ke]

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Equation for elastic potential energy:

elastic potential energy = ½ x spring constant x extension²

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Symbol equation for elastic potential energy:

Eₑ = ½ke²

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What is spring constant measured in?

N/m