A Particle (Mass = 5

Multiple Choice

A particle (mass = 5.0 g, charge = 40 mC) moves in a region of space where the electric field is uniform and is given by Ex = 2.5 N/C, Ey = Ez = 0.If the velocity of the particle at t = 0 is given by vy = 50 m/s, vx = vz = 0, what is the speed of the particle at t = 2.0 s?

A) 81 m/s
B) 72 m/s
C) 64 m/s
D) 89 m/s
E) 25 m/s