An electron moving horizontally at an initial speed of 8.0 x 10 ms ' enters a region where a constant vertical force of 6.4 x 10-17 N acts on it. a. Outline why the horizontal component of the velocity of the electron remains constant. b. The electron travels a horizontal distance of 25cm before leaving the region of the force. The mass of the electron is 9.11 x 10 31 kg. Determine: i. the vertical displacement of the electron as it leaves the region of the force ii. the angle that the electron's velocity makes with the horizontal