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The 30 kg blue skater and a 25 kg green skater face each other on friction-less roller skates. The green pushes the blue, who move

The 30 kg blue skater and a 25 kg green skater face each other on friction-less roller skates. The green pushes the blue, who move away at a speed of 1.0 m/s. Determine the green's speed.

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