It's all about fluid dynamics. The water in a river acts like a single substance. It has the tendency to stay together. One part of the fluid is not easily pulled apart from the rest. So when the water comes to a curve, the whole "bunch" of water wants to stay together and travel downhill at the same time. However, the water at the outside of the curve has to travel faster to keep up with the water on the inside of the curve because it must cover more distance in the same amount of time.
The same fluid principles also apply to air and account for the lift that occurs when air travels over an airplane wing.
The speed of water at a river bend flows much faster and deeper on the outside of the bend. On the inside of the bend the velocity is much slower and shallower.
If a river curves, the water moves fastest along the outside of the curve. There, the river tends to cut into its bank. Sediment is deposited on the inside curve, where the speed is slowest.
The angle of the graphed slope changes with changes in speed.
When it changes position or something to do with the speed.
When it changes position or something to do with the speed.
The Huang hu river in China, Ganges in india and Satluj in Himalayas are world's fastest flowing rivers with a speed of water flow crossing over 145Km/hour also.
The speed of a river can affect the time it takes a boat to cross it. If the river is flowing faster, it will push the boat downstream, making the crossing take less time. Conversely, if the river is flowing slower, it will slow down the boat's progress, making the crossing take more time.
Rivers often form a steep mountain slopes. Near its sourcem a river is often a fast flowing and generally follows a straight, narrow course. The steep slopes along the river erode rapidly. The result is a deep, V-shaped valley. from-Lil'lexoo! =]
Rivers often form a steep mountain slopes. Near its sourcem a river is often a fast flowing and generally follows a straight, narrow course. The steep slopes along the river erode rapidly. The result is a deep, V-shaped valley. from-Lil'lexoo! =]
Usually it would be an estuary.
The speed.
The average of the amount of cubic feet of water flowing out of the Amazon river per second is 7, 318, 000 cu ft/s (209, 000 m3/s).
"Acceleration" is the term used to describe motion whose speed, or direction, or both, are changing.
The acceleration changes if speed or direction changes