A particle starts its motion from rest under the action of a constant force. If the distance covered in first `10 s` is `s_1` and the covered in the first `20 s` is `s_2`, then.

Options

A. `S_2 = 2S_1`
B. `S_2 = 3S_1 `
C. `S_2 = 4S_1`
D. `S_2 = S_1`

Answer

C

Explanation

`S prop t^2 rArr S_1/S_2 = ((10)^2)/((20)^2) rArr S_2 = 4S_1`