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P1 (1.1 changes in energy stores, 1.3 energy and work, 1.4 gravitational…
P1
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1.3 energy and work
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work done is W = F x s where F is the force and s is the distance moved (along the line of action of the force)
work done to overcome friction is transferred as energy to the thermal energy stores of the objects that rub together and to the surrounding
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1.6 energy dissipation
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wasted energy is eventually transferred to the surroundings, which become warmer
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