Question

a bus decreases its speed from 80 km/hr to 60km/hr in 5 min. find the acceleration

Answer 1

Dear student

$$\begin{gathered} accelerationis \\ a=\frac{v-u}{t} \\ a=\frac{(60-80)}{5\times 60}\times \frac{5}{18} \\ a=\frac{(60-80)}{60}\times \frac{1}{18} \\ a=\frac{-20}{60}\times \frac{1}{18}=\frac{-1}{54}=-0.0185m/s^2 \\ Regards \end{gathered}$$