Question

Q4. A train takes 2hr to reach from Station A to station B which
is at a distance of 200 km from Station A. It takes 3h for
return journey. What is average speed and average velocity
of train?

Answer 1

Answer:

Therefore total distance travelled by the train is d=200+200=400km and the total time it takes in the journey is t=2+3 hours=5 hours. Average velocity of the object is the net displacement of the object per unit time. As the train travels from A to B and then back to the same point/station.

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Answer 2

Explanation:

Total distance travelled= 200+200=400km

Total time taken = 3+2=5hours

Average speed - Total distance travelled/total time taken

=> 400/5

=> 80 Km/hr

Total displacement=200-200=0 [as it comes again to the same position from where it started ]

Total time Taken= 3+2= 5hours

Average velocity - Total displacement/ total time taken

=> 0/5

=> 0 km/hr

I am not sure about the average velocity