Asked by alpha

An object is 6000 mi from the surface of a 4000 mi diameter planet. If the relative speed is 12000 mi/hr and the surface gravity of the planet is 12.9 ft/s^2, determine the impact velocity at the surface.

Given answer: 15460 mi/hr

Thanks in advance.
Answered by alpha
Nevermind, I got it. :)
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