A puck with mass mA = 2.42 [g] moves eastward with speed vA = 1.73 [m/s]. It then collides with another puck of mass mB = 1.25 [g] and is moving northward with a speed vB = 2.26 [m/s]. After the collision, puck A now moves at 48.0° north of east, while puck B moves at 17.0° south of east. A. What are the speeds of the two pucks after the collision? B. Is energy lost or gained in the system? Support your answer by calculating the change in mechanical energy of the system.

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