Please rephrase - the question is unclear.
Does the speed of the stone change during the falling into a river?
Erosion effects the Mississippi river by causing collapse in the banks of the river. Erosion also causes the river to change course slightly as the banks change.
Yes.
change
rain
The Apalachicola River
its name was the river wondeer
200 years ago there was an earthquake in Illinois that caused the flow of the Mississippi river to change direction
With his superstrength alone, he would be able to change the course of a river. So, yes. Superman isn't real
gravity
Certainly
Cool Change-Little River Band