Question

calculate the time in which the electron would acquire a velocity double of its initial velocity​

Answer 1

Answer:

that's the answer you've asked

From first equation of motion, v = u + at

         4       4     2

u = 5x10 m/s, a=10   m/s

            4          4          

v = 2u =2(5x10m/s)=10x10    m/s

Thus, the time in which electron acquire a velocity double of its initial velocity is 5 seconds.