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5a 30 kg girl and a 25 kg boy face each other on friction -free roller blades . the girl pushes the boy ,who moves away at a speed of 1.0 m/s . the girls speed is how many m/s /

  • science - ,

    m1v1 = m2v2

    (30kg)(v1)=(25kg)(1.0m/s)

    solve for v1

  • science - ,

    0.45

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