A car is moving along a straight horizontal road with a speed ${\mathrm{u}}_0$. If the coefficient of friction between the tyres and the road is $\mathrm{\mu }$, the shortest distance in which the car can be stopped is

• A

  $\frac{u_{\circ }^2}{2\mathrm{\mu g}}$

• B

  $\frac{{\mathrm{u}}_0}{\mathrm{\mu g}}$

• C

  ${\left(\frac{{\mathrm{u}}_0}{\mathrm{\mu g}}\right)}^2$

• D

  $\frac{u_0}{\mathrm{\mu }}$