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On a frictionless, horizontal air table, puck A (with mass 0.250 kg ) is moving toward...

On a frictionless, horizontal air table, puck A (with mass 0.250 kg ) is moving toward puck B (with mass 0.400 kg )

A -After the collision, puck A has a velocity of 0.150 m/s to the left, and puck B has velocity 0.750 m/s to the right. What was the speed of puck A before the collision?

B- If the two pucks collide and stick together with a final velocity of 0.6000 m/s to the right, what was the speed of puck A before the collision.

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