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If a Satellite Sent to Mars Is Designed to Return

Question 11

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 6 × 1023 kg and a radius of 3,400 km.


A) 100 m/s
B) 5,000 m/s
C) 20 m/s
D) 20,000 m/s
E) You must know the mass of the satellite to determine the answer.

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