An electron, released in a region where the electric field is uniform, is observed to have an acceleration of $3.00 \times 1014 \mathrm{~m} / \mathrm{s} 2^{3.00} \times 10^{14} \mathrm{~m} / \mathrm{s}^{2}$ in the
positive $x$ direction. (a) Determine the electric field producing the acceleration. (b) Assuming the electron is released from rest, determine the time required for it to reach a speed of $11,200 \mathrm{~m} / \mathrm{s}$, the escape speed from Earth's surface. Example $16-5$