1.

A partical is moving in a straight line under constant acceletation. If the motion starts from rest, Find the ratio of displacement in `n` second to that in the `n^(th)` second.A. `(2n-1)/n^(2)`B. `1/n`C. `n^(2)/(n-1)`D. `n^(2)/(2n-1)`

Answer» Correct Answer - D
`s_(n)=1/2 a n^(2)`
`s_(nth)=1/2 a(2n-1)`
`s_(n)/s_(nth)=n^(2)/((2n-1))`


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