Parallel Plates

5 x 10^ -2 C is moved from position X to position Y between two parallel plates as shown in the file attached.
A) Calculate the work done to move the charge from position X to position Y
B) When the charged particle is released from position Y it accelerates. Describe the direction of the particle’s acceleration.
C) If the particle experiences an acceleration of 2.75 x 10^7 ms when it is released from position Y, determine its mass