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The Standard Model

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Topology

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Units, Constants and Useful Formulas

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Last modified: November 20, 2021 ✓

Elastic and Inelastic Collisions ------------------------------- Elastic collisions are those in which no kinetic energy is lost in the collision. Thus, KEinitial = KEfinal Inelastic collisions are those in which some kinetic energy is lost in the collision at the expense of heat, internal energy etc. Thus, KEinitial = KEfinal + U In both cases, however, the momentum IS conserved. Thus pinitial = pfinal The extreme inelastic collision is one in which the colliding objects stick together after the collision. The fraction of the KE which is lost in the collision process is determined by the combination of conservation of energy and conservation of momentum.