Three laws of kinematics are identified. The first two were already known, and are presented with a slightly different perspective. However, the third law of kinematics is a new law of nature. And it states: for every elastic collisions, a free body with the higher kinetic energy can only gain energy from another body with lower kinetic energy, and the lower kinetic energy body will always gain energy from the higher kinetic energy body. Moreover, under general considerations from the theory of Special Relativity, a particle can decay into other particles only if there is a source of positive energy necessary to insure that the new particles have positive kinetic energy, which is why E=mc2 provides the source of this positive energy in the form of mass conversion into energy. Also this new kinematics leads to the reformulation of the 2nd law of thermodynamics which can now explain why heat only flows from a hot body to a cold body, and never the other way around, that a system left on its own will see its disorder increase in time, and that the entropy as defined according to Boltzmann tends to increase. The insight that we gain from this deeper concept which underlies the new law of kinematics and the reformulation of the second law of thermodynamics is that vacuum energy is a necessary condition for particles to pop out of the vacuum. However, this spells trouble for Hawking radiation as it has been formulated – it would lead to a violation of this new kinematics law. Surprisingly this new law of kinematics also sheds new insights into Planck’s ad hoc hypothesis, E = ħω, and why energy must be quantized. As a general conclusion, every dynamical theory must reconcile with this new kinematics.
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