it slows down because first it rushes down from mountain and then slows down right at the end when it goes into the sea/ocean/lake.
Rivers do not flow upstream. All rivers follow gravity downstream. That's why its called "upstream" its going AGAINST the normal flow of the river.
Gravel cannot slow down a river because rivers flow in all sorts of angles and speed.
These are some things that cause the speed of water to slow down. Broad flat channels slow a river down, a rough channel will also slow the water down. Basically, anything that increases the surface area of a body of water, against which water flows will slow it down, this is due to the increase of friction. In addition, water flows slowest at the margins of a river, if the river is winding, water will flow slower at the inside curves.
I think you mean slow down and speed up. slow down =slow, speed up=fast
slow down
A "slow moving river of ice" is a glacier. A slow moving chunk of ice floating down a river is a "floe".
speed you up
Speed up
Slow Down to the Speed of Virginia - 2013 was released on: USA: February 2013
Nothing happens to the forces. The forces are what makes the thing speed up or slow down.
resistance is use to slow down and amplify can use for speed up the cell division
They speed up.
no