Question

solve this please and do explain and send a picture​

Answer 1

there is retardation so final velocity is zero.

use v = u + at

0 = u + (-a)t

t = u/a

jitna aapka question dikha usse toh yhi answer hai

Answer 2

Hello!

The answer is option 4.

The solution is in the attachment below.

Hope you have understood .