The escape speed from an object is v2 = 2GM/R, where M is the mass of the object, R is the object's starting radius, and G is the gravitational constant 6.67 × 10-11 m3 kg-1 s-2. What is the approximate escape speed, in km/s, from the Solar System starting from an orbit at 0.6 AU? In this case, the mass of the Sun, 2.2e+30 kg, can be used as the mass of the Solar system.
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