An object's total energy at it's initial position is 100 J. It then travels a path which the work done by non

An object's total energy at it's initial position is 100 J. It then travels a path which the work done by non-conservative forces is zero and arrives at its final point. The object's potential energy is then measured at the final point. Which of the following values for the potential energy is impossible?

120 J
100 J
0 J
-10 J

120 J
your potential energy can never exceed you total mechanical energy as M.E = P.E + K.E and the K.E is always positive!!!