Question

A train travels with a speed of 60 km h-' from
station A to station B and then comes back with a
speed 80 km h' from station B to station A. Find :
(i) the average speed, and (ii) the average velocity
of train
Ans. (i) 68.57 km h, (ii) zero
​

Answer 1

the average speed is 70m/s by u+v/2 and the average velocity is zero because the displacement is zero because it start and stop at same point