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On a frictionless horizontal air table, puck A (with mass 0.245 kg ) is moving toward...

On a frictionless horizontal air table, puck A (with mass 0.245 kg ) is moving toward puck B (with mass 0.373 kg ), which is initially at rest. After the collision, puck A has velocity 0.118 m/s to the left, and puck B has velocity 0.647 m/s to the right.

Calculate ΔK, the change in the total kinetic energy of the system that occurs during the collision.

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