A particle with electric charge q moves along a straight line in a uniform electric field E with a speed of u. The electric force exerted on the charge is qE. The motion and the electric field are both in the x direction.
(a) Show that the acceleration of the particle in the x direction is given by
(b) Discuss the significance of the dependence of the acceleration on the speed.
(c) What If? If the particle starts from rest at x = 0 at t = 0, how would you proceed to find the speed of the particle and its position at time t?