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With usual notation, the following equat...

With usual notation, the following equation, said to give the distance covered in the `n"th"` second. `i.e.,
`S_(n)=u+`(a(2n-1)/2)` `is

A

numerically correct only

B

dimensionally correct only

C

both dimensionally and numerically correct

D

neither numerically nor dimensionally correct

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