Question

the odometer it's 4000 km at the start of the trip and 2500 km at the end of the trip. The trip took 2 hours calculate the average speed in the car kilometres per hour also calculate it in metre per second

Answer 1

Distance covered
= 4000 - 2500
= 1500 km

Time = 2 hours

Speed = Distance / Time
Speed = 1500 / 2 = 750 km / hour

1 km = 1000 m
750 km = 750000 m

1 hour = 3600 s
2 hour = 7200 s

Speed in m/sec
= 750000 / 7200
= 104 . 17 m/sec (approx.)