A particle starts from rest with uniform acceleration and is velocity after `n` seconds `v`. The displacement of the body in last two seconds is.A. `(v(n + 1))/(n)`B. `(2 v(n + 1))/(n)`C. `(2 v(n - 1))/(n)`D. `(v(n - 1))/(n)`

A particle starts from rest with uniform acceleration and is velocity

1.	A particle starts from rest with uniform acceleration and is velocity after `n` seconds `v`. The displacement of the body in last two seconds is.A. `(v(n + 1))/(n)`B. `(2 v(n + 1))/(n)`C. `(2 v(n - 1))/(n)`D. `(v(n - 1))/(n)`
Answer» Correct Answer - C `v = 0 + na rArr a = (v)/(n)` displacement in last two seconds `s(n) - s(n - 2)` =`(0 + (1)/(2) an^2) - (0 + (1)/(2) a(n - 2)^2)` =`2a(n - 1) = 2v ((n - 1))/(n)`.

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