You are on the Moon and would like to send a probe into space so that it does not fall back to the surface of the Moon. What launch speed do you need?

Answer 1

Vescape = sqrt (2 G M/R)

G = 6.67 * 10^-11

M = mass of moon = 7.35*10^22 kg

R = moon radius = 1.74 * 10^6 meters

Answer 2

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