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physics

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Satellite A orbits a planet with a speed of 10,000 m/s. Satellite B is twice as massive as satellite A and orbits at twice the distance from the center of the planet. What is Satellite B's speed?

  • physics - ,

    centripetal force = gravitational force

    mass*v^2/r=mass*(GMe/r^2)

    v^2=GMe/r

    So the velocity is dependent on the distance from the center of the Earth only (GMe is a constant).

    I will be happy to critique your thinking on the answer.

  • physics - ,

    vbv

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