Question

calculate the average speed of a car for its entire journey which travels in linear direction across points A, B and C with average speeds of 30km/hr and 40km/hr respectively. it returns back with an average speed of 50km/hr such that the distance of AB is equal to BC​

Answer 1

Answer:

To complete 1km distance with speed =50kmhr it tkes time t

1

​

=

50

1

​

s

To complete 1km distance with speed =40kmhr it tkes time t

1

​

=

40

1

​

s

Average speed=

(1/50)+(1/40)

1+1

​

=44.44m/s