Conservation of energy (part 1) | AP Physics | Khan Academy
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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/ap-college-physics-1 Mechanical energy is the sum of a system’s kinetic and potential energies. If the work done on a selected system is zero and there are no nonconservative interactions within the system, the total mechanical energy of the system is constant. If the
