Position of a body with acceleration '$a$' is given by $x = K{a^m}{t^n},$ here $t$ is time. Find dimension of $m$ and $n$.
$m = 1$, $n = 1$
$m = 1,\;n = 2$
$m = 2,\;n = 1$
$m = 2,\;n = 2$
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