A uniform electric field exists in the region between two

Question

Solve the all parts of given problem:

Problem: A uniform electric field exists in the region between two oppositely charged parallel plates 1.59cmapart. A proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate in a time interval 1.40×10⁶s.

Part A: Find the magnitude of the electric field.

Part B: Find the speed of the proton at the moment it strikes the negatively charged plate.

I need help to solve the above problem and use 1.60×10¹⁹C for the magnitude of the charge on an electron and 1.67×10²⁷kg for the mass of a proton.