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Smooth ball of mass m moving with a uniform velocity 0 v strikes a smooth uniform rod AB of equal mass m , lying on a frictionless horizontal table. The ball strikes the rod at the end A, perpendicular to the rod, as shown in the figure. The collision is perfectly elastic (https://i.stack.imgur.com/hu4V5.jpg)


marked as duplicate by John Rennie, G. Smith, ja72, Community Mar 27 at 16:44

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