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**A car is advertised as taking [tex]11.3\ s[/tex] to reach a speed of [tex]100\ kmh^{-1}[/tex]. About how far does it travel before reaching this speed?**

**Firstly I have tried to work out the acceleration: [tex]a=\frac{\frac{100000}{3600}}{11.3}\approx 0.2175\ ms^{-2}[/tex]**

**I've then used this to find the displacement: [tex]x=0.2175\times 11.3^2\approx 21.7\ m[/tex]**

**Am I doing something wrong? It seems like too short a displacement...**

**Thanks for your help**