If an athlete covers a constant distance of 15 m/s in 3 minutes, then how much total distance has been covered by that athlete?

1 minute = 60 seconds

So, 3 minutes = 3 x 60 = 180 seconds

Now, we can use the formula:

distance = speed x time

where speed is 15 m/s and time is 180 seconds:

distance = 15 m/s x 180 s
distance = 2700 meters

Therefore, the athlete has covered a total distance of 2700 meters.