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othelloblack t1_j8n3sr0 wrote

The article mentions a water pitcher moving parallel to the ground but I don't understand how that would be influenced by gravity

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HughJorgens t1_j8n4xem wrote

Sand and water were dripping out of the containers, and he was watching that fall, and seeing that eventually the sand and/or water would fall straight down.

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othelloblack t1_j8nnf57 wrote

But how is the container moving? It sounds like its on a flat plane

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HughJorgens t1_j8ntm7c wrote

It was. He had it sliding along, and noticed that the falling sand/water didn't keep moving horizontally, but eventually moved vertically (because of gravity).

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eeeking t1_j8oyce6 wrote

Whereas in fact it continues to move horizontally..... as well as falling to the ground. Had he noticed that, he might have preempted Newton.

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Particular-Rock2036 t1_j8plybe wrote

Well the sand/water kept moving horizontally, but they stopped being accelerated horizontally. They still retained horizontal momentum after leaving the container.

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itsnotTozzit t1_j8nta81 wrote

I think it means the water was being poured out whilst it was being moved parallel to the ground, he probably observed that the water that fell out would stop moving horizontally and instead only move downwards.

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