22.4.6. Ball mass m = 0.2 kg falls onto a stationary flat barrier without rotation at a speed vo = 2 m / s at an angle a = 45 ° and rebounds at a speed v = 1,5 m / s at an angle b = 60 °. Determine the unit tangent pulse Sf. (2.30 * 10-2)

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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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