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What is the relationship between pressure and velocity for a liquid and gas?


The higher the velocity of a fluid (liquid or gas), the lower the pressure it exerts. This is called Bernoulli’s Principle. Fluid pressure is caused by the random motion of the fluid molecules. When the fluid speeds up, some of the energy from that random motion is used to move faster in the fluid’s direction of motion. This results in a lower pressure.


Categories: Gravity & Air