A Pair of Charged Conducting Plates Produces a Uniform $\vec { E }$

A pair of charged conducting plates produces a uniform $\vec { E }$ field of 12,000 N/C,directed to the right,between the plates.The separation of the plates is 40 mm.An electron is projected from plate A,directly toward plate B,with an initial speed of v₀ = 2.0 × 10⁷ m/s.What is the speed of the electron as it strikes plate B? (e = 1.6 × 10^-19 C,m_electron = 9.11 × 10^-31 kg)

A) 1.2 × 10⁷ m/s
B) 1.5 × 10⁷ m/s
C) 1.8 × 10⁷ m/s
D) 2.1 × 10⁷ m/s
E) 2.4 × 10⁷ m/s