Question

a train travels with a speed of 60km/h from station A to B and comes back at a speed of 80km/h from station B to A
find:(1)average speed and average velocity

Answer 1

Answer:

$\huge\pink {\mathfrak{Hello!!!}}$

The average speed of the train is = speed of train from A to B+speed of train from B to A by 2=60+80/2=140/2=70

the average velocity of the train is 0

Average velocity=Displacement/time

=0/time

=0

Answer 2

Answer:

average speed =480/7 km/h

average velocity=0

Explanation:

if he comes back to original position s=0 so avg. v=0

for avg. speed let distance=x

total distance=2x

time for A to B =x/60

time for B to A =x/80

avg. speed = total x/total t

                   =2x/(x/60+x/80)

                   =480/7 km/h