what makes water in the mountain go slow or fast

The steepness of the slope is what determines its velocity, mainly. There are other factors, such as how deep it is, and how straight is the path it follows. If you ever get the chance to follow the Arkansas River up to the Mountains in Colorado, it is a very nice sight to observer all this.\

http://www.arkansasrivertours.com/

umm... this is really not a question, but the easiest way to do this method is the Line graph. To find an object's velocity, you must determine it's mass, and it's speed. Multiply them to find the objects velocity.

That is all
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iT DEPENDS IF THE MOUNTAIN IS ROUGH OR SMOOTH. WHEN IT IS SMOOTH THE WATER IS EASIER TO PASS THROUGH.

The speed of water in mountains can be influenced by several factors, including the gradient, volume of water, and the presence of obstacles.

The gradient or slope of the terrain plays a significant role in determining the speed of water flow. Typically, water will flow faster down steeper slopes compared to gentle gradients. This is because gravity accelerates water downhill, making it move faster as it descends.

The volume of water also affects its speed. When there is a larger volume of water flowing down a mountain or through a stream, it tends to move faster. This is due to the increased force and momentum generated by a greater amount of water.

Obstacles such as rocks, boulders, or vegetation can also impact the speed of water flow. These obstructions can cause the water to divert or split into smaller channels, slowing down the overall flow. Additionally, when water encounters obstacles, it may experience turbulence or eddies, which can further decrease the speed.

To determine whether water flows slow or fast in a specific mountain area, you can observe the steepness of the slope or gradient, assess the volume of the water, and consider the presence of any obstacles or barriers that might impede its flow.