Consider a car moving on a straight road with a speed of $100\, m/s$. The distance at which car can be stopped, is ........ $m$. $[\mu_k = 0.5]$
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$v^{2}-u^{2}=2 a s$ or $0^{2}-u^{2}=2\left(-\mu_{k} g\right) s$
$-100^{2}=2 \times \frac{1}{2} \times 10 \times s \Rightarrow s=1000 m$
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