Question

A body goes from A to B with a velocity of 20mis and
comes back B.to A with a velocity of 30&mis. The average
Velocity of the body during the whole jomey is​

Answer 1

Answer:

0 zero

Explanation:

average velocity = total displacement/total time taken

let

distance between A and B = s

time taken to go from A to B=t1

time taken to go from B to A=t2

A to B velocity=20m/s=s/t1

t1=s/20

B to A velocity=30m/s=s/t2

t2=s/30

total time taken=t1+t2=(s/20)+(s/30)

=s/12

total displacement=s-s=0

average velocity=0/(s/12)=0