Question

What is the period of a satellite circling Mars 100 km above the planet's surface? The mass of Mars is 6.42 ⋅ 1023 kg, its radius is 3.40 ⋅ 106 m, and G = 6.67 x 10-11 N•m2/kg2?

A) 1.75 hours
B) 1.25 hours
C) 1.15 hours
D) 1.00 hours
E) 1.45 hours