Question

The odometer of a car reads 2000 km at the start of a trip and 2400 km at the end of the trip took 8hr. Calculate the average speed of the car in kmph.

Answer 1

Distance =2000+2400km

=4400

Time =8hr

Speed =distance /time

=4400/8=550kmph

Answer 2

Given :

Distance covered by the car = s = 2400

km - 2000 km = 400 km

Time taken by the car = 8 hours

To Find :

The average speed of the car in km/h

Finding :

We know that average speed =

Total Distance Covered/Total Time Taken

= 400/8 = 50 km/h

What is average speed ?

=> The average speed of a body is defined as the ratio of the total distance covered by the body and the total time taken.

And, what is speed?

Speed of a moving body is the distance travelled by the body in the unit time.