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 E_x = 2.5 N/C, E_y = E_z = 0. If the velocity of the particle at t = 0 is given by v_y = 50 m/s, v_x = v_z = 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