Alexander Kloentrup edited textbf_Explanation_A_fluid_entering__.tex  over 8 years ago

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\textbf{Explanation}  A fluid entering a stationary pool results in a reactionary force upward per Newton’s Third Law. This causes the molecules of the stream to react solely  in the positive \textit{y} direction in a manner similar to \textbf{Figure 2}. These molecules would then continue to bounce in the \textit{y} direction until they assimilate into the pool. With a pool that is in motion, the molecules undergo the same reactionary force in the \textit{y} direction they undergo in a stationary pool but there is a second force created in the \textit{x} direction. This second force causes the molecules to then react along a resultant vector instead of only \textit{y} direction seen in the stationary pool. The second force is created due to the friction between the two surfaces of the fluid separated by a thin layer of air.