a=µg$$a=\mu g$$
u=86.4 km/hr$u=86.4 \:\mathrm{km/hr}$
at stoppage,
v=0$$v=0$$
we know that
v^2-u^2=2as$$v^2-u^2=2as$$
0-(86.486.4)=-20.10310distance$$0-(86.4*86.4)=-2*0.103*10*\text{distance}$$
7464.96/2.06=distance$$7464.96/2.06=\text{distance}$$
3623.76km=distance$$3623.76\:\mathrm{km}=\text{distance}$$