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Question

A car travels half of the distance with constant velocity 40 km/h and another half with a constant velocity of 60 km/h along a straight line. The average velocity of the car is
  1. 24 km/h
  2. 48 km/h
  3. 60 km/h
  4. 40 km/h

A
60 km/h
B
48 km/h
C
40 km/h
D
24 km/h
Solution
Verified by Toppr

Suppose total distance is 2x km then
time taken in traveling the distance first x will be t1=x40

and the time taken in traveling the distance second x will be t2=x60
now the average velocity can be calculated as V=total distancetotal time=2xx40+x60=2×40×6040+60=48Km/h

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