Zero, a hypothetical planet, has a mass of 4.0 x 10^23 kg, a radius of 3.0 x 10^

Question

Zero, a hypothetical planet, has a mass of 4.0 x 10^23 kg, a radius of 3.0 x 10^6 m, and no atmosphere. A 13 kg space probe is to be launched vertically from its surface. (a) If the probe is launched with an initial kinetic energy of 5.0 x 10^7 J, what will be its kinetic energy when it is 4.0 x10^6 m from the center of Zero? J (b) If the probe is to achieve a maximum distance of 8.0x 10^6 m from the center of Zero, with what initial kinetic energy must it be launched from the surface of Zero? J

Explanation / Answer

A) KE = totalE - mgh B) KE at beginning= PE at end = m*g*h

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