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We have seen that conservation of momentum may apply whether kinetic energy is conserved or not. What about the reverse; that is, does the conservation of kinetic energy imply the conservation of momentum in classical physics? (See “Connection Between conservation of Energy and Conservation of Momentum,” by Carl G. Adler, American Journal of Physics, May 1976, p. 483.)

We have seen that conservation of momentum may apply whether kinetic energy is conserved or not. What about the reverse; that is, does the conservation of kinetic energy imply the conservation of momentum in classical physics? (See “Connection Between conservation of Energy and Conservation of Momentum,” by Carl G. Adler, American Journal of Physics, May 1976, p. 483.)

Grade:11

1 Answers

Aditi Chauhan
askIITians Faculty 396 Points
8 years ago
A collision is said to be perfectly elastic if law of conservation of momentum and that of kinetic energy hold good during the collision and a collision is said to be inelastic if law of conservation of momentum holds good during collision while that of kinetic energy is not. So both in elastic and non-elastic collision the momentum is conserved. Therefore the momentum is always a conserved quantity in a collision. Thus the conservation of kinetic energy implies the conservation of momentum in classical physics.

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