Question

A man walks on a straight road from his home to a market 2.5 kilometre away with a speed of 5 kilometre per hour(5km/h). Finding the market closed, he instantly turns and walks back home with a speed of 7.5 kilometre per hour(7.5km/h).
What is the:
(a) magnitude of average velocity.
(b) average speed of the man over the interval of time:-
(i)0-30 min
(ii)0-50 min
(iii)0-40 min

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Answer 1

the solution is in the attachment.

Answer 2

Answer:

the above answer is correct .