[tex]v_{1}=45 \frac{km}{h}=12.5 \frac{m}{s} [/tex]
Timpul initial e 0
[tex]\Delta t=(t-t_{0})=t= \frac{d_{1}}{v_{1}}= \frac{600}{12.5}=48s[/tex]
Acceleratia
[tex]v_{1}^{2}=v_{0}^{2}+2*a*d_{1}[/tex]
[tex]a_{1}= \frac{v_{1}^2}{2d_{1}}= \frac{156.25}{1200}=0.13m/s^{2}[/tex]
Distanta parcursa in miscarea uniforma
[tex]d_{2}= v_{1}*t_{2}=12.5*600=7500m[/tex]
Accelerarea incetinita
[tex]a_{2}= \frac{\Delta v}{\Delta t}= \frac{0-12.5}{50}=-0.25m/s^{2}[/tex]
Distanta parcursa intre cele doua statii
[tex]d=d_{1}+d_{2}+v_{1}*t_{2}- \frac{at_{2}^{2}}{2}=600+7500+625-312.5=8412.5m[/tex]
[tex]d=8.41km[/tex]
