Question

The odometer of a car reads 2000km at the start of the trip and 2400km at the end of the trip.if the trip took 8h.caculate the average speed of the car in km h and m s

Answer 1

So we have to substract the end reading of odometer i.e. 2400 from 2000 then ,2400-2000= 400 then 400÷8= 50 km/h change into m/s 50×5÷18= 13.888m/s ans.

Answer 2

Distance covered by a car
Speed =2400km-2000km
=400km
Time=8hr
Average speed-total distance/Total time
Vav-Speed/time
=400km/8hr-50km/hr
In m/s the Vav-50km/hr
50multiplied by 5/18m/s=13.9m/s.