An electron moving parallel to the x axis has an initial speed of 4.58 106 m/s at the origin. Its speed is reduced to 1.06 105 m/s at the point x = 2.00 cm. (a) Calculate the electric potential difference between the origin and that point in volts (b) Which point is at the higher potential? the point x = 2.00 cm both have the same potential? or the origin?