What is the escape speed from a planet of mass m and radius r if m = 3.2 × 10^23 kg and r = 2.4 × 10^6 m?
a. 5.5 km/s
b. 4.2 km/s
c. 5.2 km/s
d. 4.8 km/s
e. 3.7 km/s
b
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