Question

Find the time it takes (in sec) for a proton initially at rest in a uniform electric field of 100 N/C to reach a speed of 0.1 c (where c is the speed of light).
a) 3.34 x 10⁻⁸
b) 6.67 x 10⁻⁸
c) 1.00 x 10⁻⁷
d) 2.50 x 10⁻⁷