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Work done by forces (part 1) | AP Physics | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now. https://www.khanacademy.org/science/ap-physics-c-mechanics Work is the amount of energy transferred into or out of a system by a force exerted on that system over a distance. Work is a scalar quantity that may be positive, negative, or zero. Only ...
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