4. A proton with velocity up = 2.0 x 10*(m/s)/ enters a region of uniform electric field E = 64(N/C)i. The proton enters the field at the origin. a. Determine the acceleration experienced by the proton. b. Determine the velocity of the proton 5.Ous after it enters the field. C. Determine the location of the proton 5.Ous after it enters the field. [Ignore relativistic corrections. Such corrections would normally be used if an object's speed is a significant fraction of the speed of light in vacuum.]