What was the speed of given puck before the collision

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On a frictionless horizontal air table, puck A (with mass 0.246 ) is moving toward puck B (with mass 0.370 ), which is initially at rest. After the collision, puck A has velocity 0.125 to the left, and puck B has velocity 0.655 to the right. What was the speed of puck A before the collision?

Reference no: EM13545285

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