Answer to Question #279456 in Physics for neyra

Question #279456

The moon has a mass of 7.35×10

22

kg

7.35×1022 kg and a radius of 1.738×10

6

m

1.738×106 m. At what speed must a rocket be launched from the surface of the moon so as not to fall back to the moon?

Expert's answer

The first cosmic velocity will be

"v=\\sqrt{GM\/R}=1680\\text{ m\/s}."

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