1. The problem statement, all variables and given/known data Knowing you can jump about 1m high on Earth's surface, how high can you jump on the unknown planet. Munknown= 4.19*10^21kg Radius Unknown= 1*10^6m 2. Relevant equations Not sure if can be used in this question K1+U1 = K2 + U2 1/2MV2 + mgh = 1/2MV2 + mgh U=-GM/r and U = mgh g=GM/R2 3. The attempt at a solution I found the force of gravity on the unknown planet using GM/R2 Giving me 0.28m/s2 Can I just equate the two equations for Gravitional Potential energy (U) to find the new height? as in -GM/r = mgh?