Do you count the distance her body travelled relative to the land? Or do you only count the distance she travelled relative to the water, and it was the water that was moving.
If you count the distance relative to the land, she’ll have been measured to have travelled much farther and with a much faster average speed.
Here’s another question: how far did she swim?
Do you count the distance her body travelled relative to the land? Or do you only count the distance she travelled relative to the water, and it was the water that was moving.
If you count the distance relative to the land, she’ll have been measured to have travelled much farther and with a much faster average speed.