Find the escape speed from a planet with a mass of 3×10^24 kg and a diameter of 2×10^6 m. Use 2⁄3×10^-10 N·m2/kg2 for the gravitational constant.
Solution)
Escape speed,
V= sqrt( 2GM/R) = sqrt((2*2/3*10^-10*3*10^24)/10^6) =20,000 m/s (Ans)
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