(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

During an Apollo lunar landing mission, the command module continued to orbit the Moon at an altitude of about 100km. How long did it take to go around the Moon once?

Rm= 1.74x10^6 m

Mm= 7.35x10^22 kg

G= 6.67x10^-11

r= Rm + 100,000 m

2. Relevant equations

v= sqrt(Gm/r)

V=2pi*r/t

3. The attempt at a solution

after using the first equation, i got v= 1,679 m/s

i plugged this into the second equation to solve for T, and got

T= 2.9x10^9 s

This seems way too high to be the answer...

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# Homework Help: Time to go around the Moon

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