Question

Mohan travells at 20m/s from home to market and returns back at 25m/s find this avarage velocity for the entire journey

Answer 1

Answer:

average velocity = (20 + 25) / 2= 45/2 = 22.5 m/s

Answer 2

Answer:

let the distance from his home to the market be x m.

Time1= Distance/speed

x/20 sec

Time 2= Distance/ speed

= x/ 25 sec

Average velocity= total distance / total time

= 2x/ x/20+ x/ 25

= 2x/ 9x/100

=2x × 100/ 9x

=200/ 9

22.22m/s