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In the study of collisions, the concepts of cross section and coefficient of restitution are well known. Nevertheless, they are rarely applied in the same context. In this work we use the coefficient of restitution to get the differential cross section for an inelastic collision between two spheres. It is concluded that the description involves only one parameter, and the value of the total cross section is confirmed by direct integration.

Secções eficazes numa colisão inelástica entre duas esferas