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physics

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If a projectile is launched vertically from the Earth with a speed equal to the escape speed, how far from the Earth's center is it when its speed is 1/9 of the escape speed?

  • physics - ,

    v=sqrt(2•G•M•R)
    v1 = v/9 = sqrt(2•G•M•R)/9,
    r =81•R = 81•6.4•10^6 m =5.18•10^8 m

  • physics - ,

    5.16*10^8 for Mastering Physics

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