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State if each of the following statements is true or false.1. In an elastic collision of two bodies, the momentum and energy of each body is conserved.2. Total energy of a system is always conserved, no matter what internal and external forces on the body are present.3. Work done in the motion of a body over a closed loop is zero for every force in nature.4. In an inelastic collision, the final kinetic energy is always less than the initial kinetic energy of the system. |
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Answer» 1. False 2. False 3. False 4. False (true usually but not always). |
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