An Electron with a Speed of 2

Multiple Choice

An electron with a speed of 2.0 × 10⁶ m/s moves into a uniform electric field of 550 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) 2.1E-8 s
B) 6.4E-9 s
C) 1.6E-6 s
D) 1.6E-6 s.
E) ​3.1E-7 s