The mass of the moon is 1 144 times the mass of a planet and its diameter 1 16 times the diameter of a planet. If the escape velocity on the planet is v, the escape velocity on the moon will be:

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As we know, escape velocity is given by, v escape = 2 G M R Now, v planet = 2 G M R = v v Moon = 2 G M × 16 144 × R = 1 3 2 G M R = v 3

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