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## Homework Statement

The amount of energy required to get a spacecraft from the Earth to the Moon

a. is greater than the energy required to go from the Moon to Earth.

b. is the same as the energy required to go from the Moon to Earth.

c. is less than the energy required to go from the Moon to Earth.

## Homework Equations

G= mM/r^2

## The Attempt at a Solution

I think the answer is c.