Cooke, Josiah Parsons, 1827-1894 · Boston, Little, Brown and Company · leaf 224
ice its pre-vious velocity, and the ball b will remain at rest. We can also apply the formulse to the case where an elasticball strikes vertically on a fixed obstacle, as when an India-rubber ball is let fall on the ground. In this case, M = oo,and {) = 0. Substituting these values, [72] becomes… … THE THREE STATES OP MATTER. 199 This is not practically true, because the surface on which it fallsis never perfectly elastic, and, moreover, because the ball doesnot recover promptly from the compression. Let us next suppose that the sphere strikes the obstacle in anoblique direction (Fig. 205),…
Matter · Heat
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