The moon has a mass of (1)/(81) that of...

The moon has a mass of `(1)/(81)` that of the earth and radius of `(1)/(4)` that of the earth. The escape speed from the surface of the earth is 11.2 km`//`s. The escape speed from surface of the moon is-

1.25 km/s

2.49 km/s

3.7 km/s

5.6 km/s

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