Relativity and Cosmology


Kinetic Energy and Conservation of Momentum

Authors: Eric Su

In the history of physics, kinetic energy has been represented by two expressions. One from Issac Newton, the other from Special Relativity. Both expressions are expected to describe a physical system that demands conservation of momentum. By examining the expression of momentum in a projectile motion, the kinetic energy from Issac Newton is found to obey conservation of momentum while the kinetic energy from Special Relativity is found to violate conservation of momentum.

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[v1] 2018-02-26 00:45:43

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