A body is dropped from the top of the tower and falls freely.
The velocity of the body after `n` seconds is proportional to .

Options

A. `n^(2)`
B. `n`
C. `2n-1`
D. `2n^(2) -1`

Answer

B

Explanation

`S=(1)/(2)gn^(2) rArr S prop n^(2)`
`S=(a)/(2)(2n-1) rArr S prop(2n-1)`.
`V=gn rArr v prop n`.