3. [2/5 Points] SERPSE10 22.6.0P.019. PREVIOUS ANSWERS ASK YOUR TEACHER PRACTICE ANOTHER i A proton is projected in the positive x direction into a region of uniform electric field E = (-5.60 x 105) i N/C at t = 0. The proton travels 6.80 cm as it comes to rest. (a) Determine the acceleration of the proton. [6.52E13 J x magnitude - How do you find the acceleration of an object if you know the net force that acts on it? m/s? direction -x