In an X-Ray Tube,high-Speed Electrons Are Slammed into a Lead

Multiple Choice

In an x-ray tube,high-speed electrons are slammed into a lead target,giving off x-rays.If the electrons are accelerated from rest through a potential difference of 160 000 volts,what speed do they have when they strike the target? (q_e = 1.6 × 10−¹⁹ C,m_e = 9.11 × 10−³¹ kg,and c = 3.00 × 10⁸ m/s)

A) 0.79c
B) 0.65c
C) 0.83c
D) 0.49c
E) ​0.48c