A particle of charge +18.5C and mass 4.84 × 10-5 kg is released from rest in a region where there is a constant electric field of +578 N/C. What is the displacement of the particle after a time of 1.89 × 10-2 s?

1) F=Eq
2) a=F/m
3) d=vt+1/2at^2

1) F= 10693 N
2) a=220929752 m/s^2
3) d= 39459.15837 m

Velocity is 0 m/s bec it was released at rest.
I substituted Equation 1 (F) in 2 and then 2 (a) in 3.
These are the equations I used to get my answer but the homework tells me I am wrong.