I am having some trouble with these questions

57 . . An electron starts at the position shown in Figure 21-39 with an initial speed v. = 5.00 x 105 m/s at 45 to the x axis. The electric field is in the +y direction and has a magnitude of 3.50 X 103 N/C. The black lines in the figure are charged metal plates. On which plate and at what location will the electron strike? "SSM 10 cm E vo 2 cm 45 FIGURE 21-39 Problem 57 *58 . . ENGINEERING APPLICATION An electron that has a ki- netic energy equal to 2.00 x 10-16 J is moving to the right along the axis of a cathode-ray tube as shown in Figure 21-40. An elec- tric field E = (2.00 X 10* N/C) j exists in the region between the deflection plates, and no electric field (E = 0) exists outside this region. (a) How far is the electron from the axis of the tube whenit exits the region between the plates? (b) At what angle is the electron moving, with respect to the axis, after exiting the region between the plates? (c) At what distance from the axis will the electron strike the fluorescent screen? Fluorescent screen Deflection plates FIGURE 21- 40 Problem 58 4 cm-+ 12 cm