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After the ball moves horizontally to Inclined plane, because the direction of motion is not parallel to Inclined plane, the ball will have normal velocity (perpendicular to Inclined plane); after the liquid moves horizontally to Inclined plane, because the direction of motion is not parallel to Inclined plane, will the liquid also have normal velocity? I think there will be a normal velocity, so the liquid pressure on the Inclined plane surface will decrease, creating a pressure gradient, which causes the liquid to change its direction of motion. So similar lift phenomena occur on Inclined planes. enter image description here

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