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This tag is for questions relating to collision which is the interaction between two or more bodies that results in physical contact and an exchange of momentum between the bodies involved. When it happens, kinetic energy is often exchanged between the molecules’ translational motion and their internal degrees of freedom.
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Relation between the conservation of Energy and the conservation of Momentum?
Many here have quoted as presumption a priori that the situation implies an inelastic collision, but it wasn't immediately obvious to me that this must be so. … The plots show the results, post collision, for the velocities of mass 1 ( x axis) and mass 2 (y axis), under conservation of momentum and conservation of kinetic energy. …