an electric field of 2.0 x 10^4 N/C is directed along the positive x axis, what is the electric force on a eletron in this field what is the electric force on a proton in this field

Acar traveling at a constant speed of 22.0 m/s passes a trooper hidden behind a billboard. one second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.50 m/s2. how long does it take the trooper to overtake the speeding car? solve this problem by a graphical method. on the same graph, plot position versus time for the car and the trooper.