In $S=a+bt+c{t}^{2}$. S is measured in metres and t in seconds. The unit of c is

(1) None

(2) m

(3) $m{s}^{-1}$

(4) $m{s}^{-2}$

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#2 | Dimensional Analysis : Remaining

Concept Questions :-

Dimensions

(4) $c{t}^{2}$ must have dimensions of L

$⇒$c must have dimensions of $L/{T}^{2}$ i.e. $L{T}^{-2}$.

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