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A sensation of falling occurs when the labyrinth or vestibular apparatus, a system of fluid-filled passages in the inner ear, detects changes in acceleration. This sensation can occur when a person begins to fall, which in terms of mechanics amounts to a sudden acceleration increase from zero to roughly 9.81 m/s 2 .
A freely falling object may not necessarily be falling down in the vertical direction. If the common definition of the word "fall" is used, an object moving upwards is not considered to be falling, but using scientific definitions, if it is subject to only the force of gravity, it is said to be in free fall.
The waterfall model is a breakdown of developmental activities into linear sequential phases, meaning that each phase is passed down onto each other, where each phase depends on the deliverables of the previous one and corresponds to a specialization of tasks. [1]
"Falling Slowly" is an indie folk/indie rock song written, composed and performed by Glen Hansard and Markéta Irglová. It was featured on the soundtrack of the 2007 Irish musical romance film Once , which starred Hansard and Irglová, and for which it won the Academy Award for Best Original Song at the 80th Academy Awards . [ 2 ]