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Action-Reaction Law, Collisions
This lecture covers the concept of perfectly inelastic collisions between two material points that remain attached after the collision, the calculation of final velocity, the momentum balance, and the dissipation of kinetic energy during collisions. It also discusses elastic collisions, the coefficient of restitution, the two-body problem, the law of motion, the center of mass reference frame, and the total momentum and kinetic energy of a two-body system. The instructor explains the reduction of motion to the center of mass and the reduced motion of a system with reduced mass.