Question

electron moving with a velocity of 5 into 10 to the power 4 m per second into a uniform electric field and requires a uniform acceleration of 10 to the power 4 m per second square in the direction of its initial motion

Answer 1

Heya,
here is your answer,
_____

Initial velocity of the electron is, u = 5 × 104 m/s

Acceleration of the electron is, a = 104 m/s2

(i)

Using, v = u + at

=> 2u = u + at

=> t = u/a = (5 × 104)/( 104) = 5 s

(ii)

Distance travelled in this time is,

S = ut + ½ at2

=> S = (5 × 104) × 5 + ½ × 104 × 52

=> S = 375000 m

________

Hope it helps u! !!
Cheers ☺☺