1. The problem statement, all variables and given/known data A particle of mass m = 3.0 kg moves along the x axis through a region in which its potential energy U(x) varies as shown in the Figure. When the particle is at x = 8.5 m, its velocity is 2.273 m/s. http://i118.photobucket.com/albums/o...yfe42/phys.gif [Broken] D.) What is its speed at x = 14.0 m ? 2. Relevant equations ET= mgh+.5mv^2 3. The attempt at a solution I keep getting it wrong, can someone gear me to the right direction?