- #1

whitetiger

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If nothing is done to correct its orbit,

**with what speed (in km/h) will the spacecraft crash into the lunar surface?**

Take the gravitational constant to be 6.673 x 10^-11\cdot {\rm m}^{2}/{\rm kg}^{2}, the mass of the Moon to be 7.35 x 10^22\:{\rm kg}, and the radius of the Moon to be 1.74 x 10^{6}\:{\rm m}.

We can use equation v = sqrt(Gme)/r))