The moon Demos is 23,500 km from Mars.Assuming it orbits in a circular path and its average speed is 1348 m/s,how much time does it take Demos to complete one orbit? A)1.10 * 10⁵ s B)4.89 * 10³ s C)7.11 * 10⁵ s D)9.54 * 10⁵ s E)1.74 * 10⁴ s

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Quizplus · Accepted Answer

The correct answer is A.The time period of an orbit is given by:T = 2πr / vwhere r is the radius of the orbit and v is the speed of the object.In this case, r = 23,500 km = 23,500,000 m and v = 1348 m/s.Therefore, T = 2π(23,500,000 m) / 1348 m/s = 1.10 * 10^5 s.

The Moon Demos Is 23,500 Km from Mars