The odometer of Raja’s car reads 1700 km at the start of a trip and 2500 km at the end of the trip. The trip took 16 h. What is the average speed of Raja’s car in ${{ms}^{-1}}$
Here, distance covered by the car = (2500 -1700) km = 800 km
Time elapsed = 16 h
Average speed = Total distance / total time taken
u = 800/16 = 50 km/h
As 1km = 1000m and 1h = 3600s
u = 50 x 1000/ 1 x 3600 = 13.9 ${{ms}^{-1}}$