In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.40 × 10^(-17) N during the first 9.40 cm of the tube's length; then they move at essentially constant velocity another 45.0 cm before hitting the screen.
Find the speed of the electrons when they hit the screen.=
m/s
How long does it take them to travel the length of the tube?=
ns