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A car moves through 20km at a speed of 40km/h and the next 20km at the speed of 60km/h . Calculate it's average speed?

Posted by Sweta Soreng 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

Average speed of first
distance = 20 km
speed = 40 km/h
time taken = 20/40 = 1/2 hrs
2nd time average
distance = 20 km
speed = 60 km/h
time taken by the car is = 20/60 = 1/3 hrs
total time taken = t1+t2 = 1/2 +1/3 = 5/6 hrs
Average speed of the car is = (20+20)/(5/6)
= 48 km/h

3Thank You

ANSWER

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