Answer:
6.25 m/s
Explanation:
The average speed of an object is the ratio of the total distance traveled by the object and the total time taken to cover the distance. Mathematically,
Average speed = total distance traveled/total time taken.
In this case;
Total distance traveled = 650 + 850 = 1500 m
Total time = 240 s
Average speed = 1500/240 = 6.25 m/s
The average speed of the man is, therefore, 6.25 m/s.
