Question

A train takes 2 hours to reach station B from station A and then 3 hours to return from station B to A . Distance between two stations is 200 km . Find (a) average speed (b) the average velocity of train

Answer 1

speed= distance/time
= 400/5
= 80km/hr
velocity = displacement /time
= 0/5
= 0

Answer 2

Hi friend,

Average speed = total distance/total time

(It includes both the went and the return of the train)

Average speed = 200+200/2+3

Speed =400/5

Speed= 80m.

Velocity \= displacement /time.

( though it comes back to it's original position it do not have distance between them)

:- =0

Velocity =0.

Hope this helped you a little!!!