If the Orbital Velocity of the Moon Is 1 $v _ { c } = \sqrt { \frac { G M } { r } }$

question 52

Multiple Choice

If the orbital velocity of the Moon is 1.0 km/s, what is the orbital velocity of a satellite that is 1/16th as far from Earth as the Moon? Hints: There is a long way and a short way to do this calculation. 
$v _ { c } = \sqrt { \frac { G M } { r } }$ ; G = 6.67  10^-11 m³/s²/kg

• A) 1/16 km/s
• B) 1/8 km/s
• C) 4 km/s
• D) 8 km/s
• E) 16 km/s

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