An electron with a speed of 2.0 ´ 106 m/s moves into a uniform electric field of 500 N/C that is parallel to the electron’s motion. How long does it take to bring the electron to rest? (me = 9.11 ´ 10-31
kg, e = 1.6 ´ 10-19 C)
a. 2.3 ´ 10-8 s
b. 3.5 ´ 10-8 s
c. 1.2 ´ 10-7 s
d. 2.3 ´ 10-6 s