Answer:
4.44m/s.
Step-by-step explanation:
To find the average speed, you need to multiply the number of laps (5) by the length of each lap (400 m) to get the total distance (2000 m). Then you need to divide that by the total time (7.5 min) converted to seconds (450 s). The result is 4.44 m/s.
I hope my answer helped you! If you need more information or help, comment down below and I will be sure to respond if I am online. Have a wonderful rest of your day!