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52-54. Ganymede, one of Jupiter's moons, is the largest moon in our solar system. It has a mass of 1.48 × 1023 kg and a radius of 2.63 × 10 m. A 15.0 kg lunar rover is on Ganymede's surface.
52. How much does the rover weigh?
a) 31.0 N
b) 28.6 N
c) 26.2 N
d) 23.8 N
e) 21.4 N
53. The rover is launched upward with an initial speed of 1100 m/s. What maximum altitude (distance above the surface) does it reach?
a) 355 km
b) 405 km
c) 455 km
d) 505 km
e) 555 km
54. The rover is finally placed into elliptical orbit about Ganymede. The closest distance from the rover's orbit to Ganymede's center is 3.00 x 10 m and the furthest distance is 4.00 x 106 m. What is the orbital period?
a) 12,100 s
b) 13,100 s
c) 14,100 S
d) 15,100 S
e) 16,100 s
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