Suppose there is a 2.5×10⁶ N/C electric field in some region. Calculate the magnitude of the acceleration, in meters per second squared, of a proton from rest in such an electric field. a. 1.6 × 10⁶ m/s² b. 2.5 × 10⁶ m/s² c. 4.8 × 10⁶ m/s² d. 8.9 × 10⁶ m/s²