FIGURE 8-12 a 2-Kg Mass Is Moving Along the X

FIGURE 8-12 A 2-kg mass is moving along the x axis. The potential energy curve as a function of position is shown in Figure 8-12. The system is conservative. There is no friction.
-Refer to Figure 8-12. If the kinetic energy of the object at the origin is 12 J, what will be the speed of the object at 6.0 m along the +x-axis?

A) 2.0 m/s
B) 2.2 m/s
C) 2.5 m/s
D) 2.7 m/s
E) 3.0 m/s