A 0.20-kg particle moves along the x axis under the influence of a conservative force. The potential energy is given N U X = 15 - m m where x locates the position of the particle. If the particle has a speed of 5.0 - when it is at x = 1.0 m, its speed S when it is at the origin is O 13 m/S O 6.5 m/s O 150 m/s O 46 m/s O 26 m/s