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Question: Which of the following is the best evidence that work has been done on or by an object? The velocity of the object remains constant. The mass of the object has changed. The energy of the object has changed. The direction the object is moving remains constant.
The best evidence that work has been done on or by an object is "The energy of the object has changed." In physics, work is done when there is a displacement of the object due to an applied force and the energy is either transferred to or from the object.
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