Hint from book: calculate time for electron to travel to top plate/ return to initial vertical position given downward acceleration

In the figure a uniform, upward electric field of magnitude 1.60 x 10 N/C has been set up between two horizontal plates by charging the lower plate positively and the upper plate negatively. The plates have length L = 10.0 cm and separation d = 1.70 cm. An electron is then shot between the plates from the left edge of the lower plate. The initial velocity of the electron makes an angle 0 = 53.0 with the lower plate and has a magnitude of 6.10 x 10 m/s. (a) Will the electron strike one of the plates? (b) If so, which plate, top or bottom? (c) How far horizontally from the left edge will the electron strike? E Vo L