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A small block slides without friction do...

A small block slides without friction down a inclined plane starting from rest. Let `S_n` be the distance travelled from time `t=n-1` to `t=n`. Then, `(S_n)/(S_(n+1))` is

A

`(2n-1)/(2n)`

B

`(2n+1)/(2n-1)`

C

`(2n-1)/(2n+1)`

D

`(2n)/(2n+1)`

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