Two motionless ice skaters face each other and put their palms together. One skater pushes the other away using a constant force for 0.80 s. The second skater, who is pushed, has a mass of 110 kg and moves off with a velocity of -1.2 m/s relative to the rink. If the first skater has a mass of 45 kg, what is her velocity relative to the rink after the push? (Consider any forces other than the push acting on the skaters as negligible.)

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