Problem

At some instant the velocity components of an electron moving between two charged parallel plates are

v_x = 1.5 \times 10^5 \text{ m/s}

and

v_y = 3.0 \times 10^6 \text{ m/s}

. Suppose that the electric field between the plates is given by

\mathbf{E} = (120 \text{ N/C}) \hat{j}

. (a) What is the acceleration of the electron? (b) What will be the velocity of the electron after its

x

-coordinate has changed by

2.0 \text{ cm}