Question

. A bus increases its speed from 20 km/h to 50 km/h in 10 s . What will be its acceleration?

Answer 1

Dear Student
$$\begin{gathered} v=50km/h=50\times \frac{1000}{60\times 60}\frac{m}{s}=13.89m/s \\ u=20km/h=20\times \frac{1000}{60\times 60}\frac{m}{s}=5.55m/s \\ a=\frac{v-u}{t}=\frac{13.89-5.55}{10}=\frac{8.34}{10}=0.834m/s^2 \end{gathered}$$
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