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Published online by Cambridge University Press: 03 November 2016
We have seen that for solving problems on the simultaneous impact of more than two bodies, we require in addition to the laws of Abstract Dynamics, not only a generalization of Newton’s Empirical Law as to change of relative velocity, but also the assumption that the impacts are simultaneous in the special sense of having their greatest compression at the same instant. In other words, it is only in a particular set of special cases that elementary methods can lead to a solution.
page 79 note * This is perceived by the sense of touch when a batsman strikes a cricket ball, and by the ear when a bell is tolled.