Given mass of the moon is 1/81 of the ma...

Given mass of the moon is 1/81 of the mass of the earth and corresponding radius is 1/4 of the earth. If escape velocity on the earth surface is 11.2 km / s , the value of same on the surface of the moon is

0.14 km `s^-1`

0.76 km `s^-1`

2.45 km `s^-1`

5.28 km `s^-1`

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