Speed of two identical cars are $u$ and $4u$ at a specific instant. The ratio of the respective distances in which the two cars are stopped from that instant is
$1:1$
$1:4$
$1:8$
$1:16$
Speed of two identical cars are $u$ and $4u$ at a specific instant. The ratio of the respective distances in which the two cars are stopped from that instant is
$S \propto {u^2} \Rightarrow \frac{{{S_1}}}{{{S_2}}} = {\left( {\frac{1}{4}} \right)^2} = \frac{1}{{16}}$
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