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Q. A body starts from rest and travels ' $s$ ' $m$ in $2^{\text {nd }}$ second, then acceleration is

Motion in a Straight Line

Solution:

$S _{ n }= u +\frac{ a }{2}(2 n -1)$
or, $ S=\frac{a}{2}(2 \times 2-1) $
$\Rightarrow a=\frac{2}{3} \,m / s^2$