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## GR0877 Problem 29

PROBLEM STATEMENT: This problem is still being typed.

SOLUTION: (C) In elastic collisions energy is conserved. So $Mv^2/2 = M(v/2)^2/2 +Mu^2/2$ from which one has $u = \frac{\sqrt{3}}{2} v$.

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Categories: 0877 Tags: , , , ,
1. 16.10.2013 at 22:31

Why doesn’t conservation of momentum give the same result for this problem?

• 22.09.2014 at 23:02

Yeah I have the same problem! Using momentum conservation, I get choice E but with a minus sign in between. So, since my answer isn’t any of the choices, i would used E conservation.