What Is the Escape Velocity from the Moon for a Lunar

question 40

Multiple Choice

What is the escape velocity from the Moon for a lunar landing module sitting on the Moon's surface? Hints: $V _ { e } = \sqrt { \frac { 2 G M } { r } }$ ;
The mass of the Moon is 7.2 × 10²² kg; its radius is 1738 km; G = 6.67  10^-11 m³/s²/kg

• A) 2.3 m/s
• B) 23 m/s
• C) 2.3 km/s
• D) 11 km/s
• E) 23 km/s