a very large plate assembly in a lecture hall at the university of toronto. the electric field, due to the assembly, points straight up towards the ceiling. A student, inside the hall, throws a 2.00kg insulator with an initial speed of 28.4 m/s at an angle of 45 degrees from the ground. the insulator hits the ground 4.00s later. Given that the insulator has a charge of -5.00 uC, determine the electric potential difference between the bottom and the top of the insulators pathway​