The escape velocity for the earth is 11.2 km / s . The mass of another planet 100 times mass of earth and its radius is 4 times radius of the earth. The escape velocity for the planet is

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The escape velocity of the the planet v escape ​ v e ​ v p ​ ​ v e ​ v p ​ ​ v p ​ ​ = R 2 G m ​ ​ ∝ R M ​ ​ = R p ​ M p ​ ​ × M e ​ R e ​ ​ ​ = 100 × 4 1 ​ ​ = 5 = 5 × 11.2 = 56 km / s ​

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