Particle Motion on a Potential Energy Curve

[umdece4]

Homework Statement

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

D.) What is its speed at x = 14.0 m ?

Homework Equations

ET= mgh+.5mv^2

The Attempt at a Solution

I keep getting it wrong, can someone gear me to the right direction?

 

[radou]

The figure is not working, at least not for me.