Inverted Cascade

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93.Inverted Cascade

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Three boxes A, B, and C lie along a straight line on a horizontal frictionless surface, in that order from left to right. Box A has mass

m

and is moving to the right with speed

v

; boxes B and C are initially at rest. The masses of B and C can be chosen freely. If all collisions are elastic, which of the following is closest to the maximum possible final momentum of box C?

mv

\sqrt{2}\,mv

2mv

4mv

EUnbounded

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