A body sliding on a smooth inclined plane requires `4s` to reach the bottom, starting from rest at the at the top. How much time does it take to cover ont-foruth the distance startion from rest at the top?

Options

A. 1 s
B. 2 s
C. 4 s
D. 16 s

Answer

B

Explanation

`d=(1)/(2)a(4)^(2)` (i)
`(d)/(4)=(1)/(2)at^(2)` (ii)
`(1)/(4)xx(1)/(2)a(4)^(2)=(1)/(2)at_(2)`
`t=2 s`