Question

A car travels one –third distance on a straight road with a velocityof 10km/hr, next one

-

third with velocity 20km/hr and the last with a velocity 60km/hr. What is the average velocity of

the car in the whole journey.​

Answer 1

Step-by-step explanation:

The average velocity of the car in whole journey is 18 km/hr. Let us considered the total distance is 3x and total time is T. Hence, The average velocity of the car in whole journey is 18 km/h.

Answer 2

Answer:

average velocity =Displacement/Time

Step-by-step explanation:

displacement is 3d

time is t1 t2 and 53 respectively

so avg. velocity is 3d/t1+t2+t3

since time is equal to distance * speed

so 3d/d/10+d/20+d/60

take LCM which is 60

3d/10d/60

3d/10d*60

ans is 18 kmph