Multiple Choice
If a satellite sent to Mars is designed to return a rock sample to Earth,how fast must the satellite be launched from its surface in order to escape Mars's gravity? For reference,Mars has a mass of 
and a radius of 2,400 km.
A) 100 m/s
B) 6,000 m/s
C) 20 m/s
D) You must know the mass of the satellite to determine the answer.
Correct Answer:
Verified
Correct Answer:
Verified
Q17: If you weighed 150 lbs on Earth,what
Q19: Kepler's third law holds true mathematically only
Q20: Suppose you are suddenly transported to a
Q21: The average distance between a planet and
Q23: How much stronger is the gravitational force
Q24: If you found an exoplanet whose mass
Q25: An empirical science is one that is
Q26: If you have two moons that have
Q27: The time it takes a planet to
Q84: Planets with circular orbits travel at the