Electrostatic force help....??

A block with a mass of 7.73 g and a charge of +5.65 x 10-5 C is placed in an electric field with x component Ex = 4.13 x 103 N/C, y component Ey = -761 N/C, and z component Ez = 0. (a) What is the magnitude of the electrostatic force on the block and (b) what angle does that force make with the positive x direction? If the block is released from rest at the origin at time t = 0, what are its (c) x and (d) y coordinates (in m) at t = 3.92 s?