Physics: Principles and Problems Chapter 11 Vocab – Flashcards
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Rotational kinetic energy
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The kinetic energy of an object, proportional to the object's moment of inertia and the square of its angular velocity.
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Gravitational potential energy
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The stored energy in a system resulting from the gravitational force between Earth and the object.
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Reference level
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The position where gravitational potential energy is defined as zero.
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Elastic potential energy
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The potential energy that may be stored in an object, such as a rubber band, as a result of its change in shape.
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Law of conservation of energy
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States that in a closed, isolated system, energy is not created or destroyed, but rather, is conserved.
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Mechanical energy
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The sum of kinetic and gravitational potential energy of a system.
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Thermal energy
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A measure of the internal motion of an object's particles.
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Elastic collision
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A type of collision in which the kinetic energy before and after the collision remains the same.
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Inelastic collision
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A type of collision in which the kinetic energy after the collision is less than the kinetic energy before the collision.
