Question

A boy walks on a horizontal road and travels 2.5 km with constant speed of 5 km/hr.
Then he returns to the same point and walks with constant speed of 7.5 km/hr. What
is the (a) average velocity of the man during the whole journey. (b) average speed
of the man over the following intervals of time. (i) 0 to 30 min (ii) 0 to 50 min
(m) 0 to 40 min.

Answer 1

Explanation:

please find the attachment

please ask if you have any doubt

Answer 2

Answer:

hey mate ✌✌

speed will be 6 km / hr.

hope it helps ✔✔