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In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 1.00×1016 kg and a radius of 8.50 km.

What is the speed of a satellite orbiting 4.70 km above the surface?
What is the escape speed from the asteroid?

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  1. 1) set v^2/r=G*mass/r^2 where r is radius asteroid + altitude.
    solve for v

    2) 1/2 vescape^2=GMaste/radius

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    bobpursley

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