These days all buses and cars are fitted with speedometer,
which shows the velocity of the vehicle. A device called
odometer records the distance moved by the vehicle.
If the reading on the odometer of a vehicle in
the beginning of a trip and after 40 minutes were
1048 km and 1096 km respectively, calculate its average
velocity. Will the reading on the speedometer show
this velocity when vehicle is moving ? Support your
answer with reason.
Answers
Final distance= 1096km
Initial distance= 1048km
Time taken= 40min = 40/60 h
Average speed
= Total Distance covered/ Total time taken
= Final distance - initial distance/ total time taken
= 1096-1048/(40/60)
= 48/(40/60)
= 48*60/40
= 72km/h
No the speedometer may or may not show this reading, because the vehicle can move at different speeds while transition and doesn't have a constant speed. But this is the average speed.
Answer:
Final distance= 1096km
Initial distance= 1048km
Time taken= 40min = 40/60 h
Average speed
= Total Distance covered/ Total time taken
= Final distance - initial distance/ total time taken
= 1096-1048/(40/60)
= 48/(40/60)
= 48*60/40
= 72km/h
No the speedometer may or may not show this reading, because the vehicle can move at different speeds while transition and doesn't have a constant speed. But this is the average speed.