Question

A boy goes from A to B with a
velocity of 20 mlmin and come back
from B to A with a velocity of 30 m/min the average velocity of the boy during the whole journey is ? ​

Answer 1

Answer:

Average velocity =

Total time/Total displacement

Since, in this case, the particle initial and final points are the same, therefore its Displacement =0.

∴Average velocity=0

Answer 2

A boy goes from A to B with a

velocity of 20 mlmin and come back

from B to A with a velocity of 30 m/min

so the average velocity of the boy during the whole journey =20+30/2 m/min =50/2 m/min =25 meter/minute