A pair of charged conducting plates produces a uniform electric field of 9,000 N/C, directed from plate A toward plate B, between the plates. The separation of the plates is 50 mm. An electron is projected from plate A, directly toward plate B, with an initial speed of v0 = 1.6 × 10^7 m/s, as shown. What is the speed of the electron when it strikes plate B? (e = 1.60*10^-19; mass electron = 9.11*10^-31)