Electrostatic Potential and Capacitance Part 2

An electron is made to enter symmetrically between two parallel and equally but oppositely charged metal plates, each of 10 cm length. The electron emerge out of the electric field region with a horizontal component of velocity 106m∕ s. If the magnitude of the electric field between the plates is 9.1V∕cm, then the vertical component of velocity of electron is
(mass of electron =9.1×10−31‌kg and charge of electron =1.6×10−19C )