Physics Final Study Guide: Chapter 11 – Flashcards
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Law of conservation of energy
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Within a closed, isolated system, energy can change form, but the total amount of energy is constant
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Reference level
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The position at which the potential energy is defined to be zero
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Mechanical energy
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The sum of the kinetic and gravitational potential energy of a system
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Kinetic energy
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The energy of motion, measure in joules
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Gravitational potential energy
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Energy store in an Earth-object system as a result of gravitational attractions between the object and Earth
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Inelastic collision
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A collision in which the the kinetic energy decreases
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Rotational kinetic energy
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Energy that depends on an object's moment of inertia and its angular velocity
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Thermal energy
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Energy that usually makes the temperature of colliding objects rise slightly
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Elastic collision
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A collision in which the kinetic energy doesn't change
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Elastic potential energy
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The energy in a compressed spring or a stretched rubber band
