question_answer

A bus is moving at a speed of \[20\,m{{s}^{-1}}.\] Calculate the distance covered by it in kilometers in 25 minutes.

Answer:

\[v=20\,\,m/s=20\times {{10}^{-3}}km/s\] \[t=25\,\,\min =25\times 60\sec .\] \[S=?\] \[Dis\tan ce=Speed\times time\]                 \[=20\times {{10}^{-3}}km\,\,{{s}^{-1}}\times 25\times 60s\]                 \[=500\times {{10}^{-3}}\times 60km=30km\]