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AP Physics: Work and Energy Flashcards

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8237159968Kinetic Energy Formula1/2 mv^20
8237159969The Two Forms of Kinetic EnergyTranslational (when an object's center of mass is moving) and Rotational (when an object rotates)1
8237159971Define Gravitational Potential Energy (Ug)Energy stored in a gravitational field2
8237159972Ug Formula near a planetmgh3
8237159974Define Elastic Potential Energy (or, Spring Potential Energy (Us))Energy stored by a spring4
8237159975Us Formula1/2 kx^25
8237159979Define Mechanical Energyrefers to the sum of potential and kinetic energies6
8237159980Define workwork is done when a force acts on something that moves in a distance parallel to that force7
8237159981Define Powerenergy used per second, or work done per second8
8237159982Work Formula(s)Work = force times parallel displacements, so W=Fd, or W=Fdcosx9
8237159983Explain negative vs. positive workWhen a force is exerted in the same direction as the object's motion, the work done is considered to be a positive quantity; when a force is exerted in the opposite direction of the object's motion, the work done is considered to be negative.10
8237159984Define Net WorkThe algebraic sum of the work done by each force11

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