The surface of Mars's moon Phobos (mass = 1.1×1016 kg, radius = 12km). Calculate Escape Velocity. Km/s?
The surface of Mars's moon Phobos (mass = 1.1×1016 kg, radius = 12km).
Calculate Escape Velocity
Answer in Kilometers/s
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Verified answer
v = sqrt(2GM / r)
v = sqrt(2 * 6.67 * 10^(-11) (m^3 / (kg s^2)) * 1.1 * 10^(16) (kg) / (12 * 1000 m))
EDIT:
Well, I screwed that up
v = sqrt(1.223 * 10^(-11 + 16 - 3)) m/s
v = sqrt(1.223 * 10^2) m/s
v = sqrt(1.223) * 10 m/s
v = 1.1058 * 10 m/s
v = 11.058 m/s
In km/s
.011 km/s