In a Television Tube,an Electron Starting from Rest Experiences a Force

Multiple Choice

In a television tube,an electron starting from rest experiences a force of 4.0 $\times$ 10^-15 N over a distance of 50 cm.The final speed of the electron is (do not worry about relativistic effects) :

A) 4.4 $\times$ 10¹⁵ m/s
B) 6.6 $\times$ 10⁷ m/s
C) 3.3 $\times$ 10⁷ m/s
D) 1.3 $\times$ 10⁸ m/s
E) 6.6 $\times$ 10⁸ m/s