Posted by **Oisin** on Monday, July 26, 2010 at 5:17am.

Show that the escape speed n for a body located on the surface of a planet of radius r and mass M is given by the expression v = sqrt( (2* G * M)/r)

now im using (K+Ug)i = (K+Ug)k

where Kf = 0 because final velocity is zero

and Ugf = 0 because its final distance is infinity

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