22.4.4. Before hitting the center of mass of the plane of the hoop swirling velocity v1 = 3 m / s, and after hitting it becomes equal to v2 = 1,8 m / s. Determine the coefficient of restoration of normal pulse, and if the angle of incidence = 45 °, and the reflection angle of the b3 = 32 °. (0.720)

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(DYNAMICS, Chapter 22 - impact theory section - 22.4: The action of impact forces to the rigid body, commits the plane-parallel movement) of Reshebnik to the collection of short tasks on the theoretical mechanics Kep OE, JA Viba, OP Grapis, JA Svetinysh et al. Publishing Moscow / Graduate School / 1989, 2009, 2012.
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