Why might a person standing close to a rapidly moving train be pulled toward it___________?
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Answer: C. Towards the train
Explanation
Bernoulli principle states that fast moving fluids exhibit lower static pressure than slower surrounding air. A rapidly moving train drags adjacent air along with it, creating a high velocity air channel. Lower air pressure beside the moving train creates a net force pulling nearby observers inward. Fluid dynamics principles apply to gases like air treated as continuous compressible fluid mediums. Pressure differentials exert physical forces pushing objects from high pressure regions toward low pressure zones. Streamlines crowd together near fast moving objects where fluid velocity increases significantly.
Railway safety platforms maintain yellow safety lines to keep passengers away from high-speed train zones. Aerodynamic lift on airplane wings relies on the same pressure differentials described by Bernoulli equation. Understanding fluid pressure hazards near fast vehicles prevents accidental pedestrian injuries at transit stations. Forces directed away from the train contradict the pressure reduction predicted by Bernoulli fluid dynamics. Forces acting exclusively on the person without directional context ignore external aerodynamic pressure influences. Self-directed forces fail to explain external environmental pressure variations caused by moving air currents.
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