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An object of mass 4 kg4 kg initially at rest on a surface has both kinetic and potential energies equal to zero. It is then lifted under the influence of both nonconservative forces and the conservative force of gravity. The nonconservative forces do +40 J+40 J of work on the object. The conservative force does −22 J−22 J of work. The speed of the object at the end of the motion is most nearly
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