Answer: In each of Examples 8.10, 8.11, and 8.12 (Section
Chapter 8, Problem Q8.11(choose chapter or problem)
In each of Examples 8.10, 8.11, and 8.12 (Section 8.4), verify that the relative velocity vector of the two bodies has the same magnitude before and after the collision. In each case, what happens to the direction of the relative velocity vector?
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