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There is a planet with two moons, Moon D and Moon P. Moon A is located...

There is a planet with two moons, Moon D and Moon P.
Moon A is located in a stable circular orbit 2398 km from the surface of the planet, has an orbital
period of 19 hours, and was a magnificent moon which served as the intellectual center of the whole
sector. The other moon - Moon B - is a considerably smaller body. Moon D is in a stable circular orbit 59850 km from the surface of the planet and had an orbital period
of 47 hours. Based on the orbital data of these two moons, how long will it take an object to reach the
ground if it was dropped from a height of 15 m above the surface of the planet?

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