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Statement of a problem № 2544

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Two girls (masses m1 and m2) are on roller skates and stand at rest, close to each other and face to face. Girl 1 pushes squarely against girl 2 and sends her moving backward. Assuming the girls move freely on their skates, with what speed does girl 1 move?

Solution:
Two girls (masses m1 and m2) are on roller skates and stand at rest, close to ea

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