Physics / Dynamics
posted by alpha on .
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.

Nevermind, I got it. :)