An electron is released from rest at a distance of 0550m

Question

Solve the all parts of given question:

Question: An electron is released from rest at a distance of 0.550m from a large insulating sheet of charge that has uniform surface charge density 4.90 x 10^-12 C/m².

Part A: How much work is done on the electron by the electric field of the sheet as the electron moves from its initial position to a point 7.00×10² m from the sheet?

W= ____

Part B: What is the speed of the electron when it is 7.00×102 m from the sheet?

v=______

Please help, completely confused!! Give steps if possible for above question.