- /free"fawl'/, v., free-fell, free-fallen, free-falling, adj., n.v.i.1. (of parachutists) to descend initially, as for a designated interval, in a free fall: The jumpers were required to free-fall for eight seconds.adj.2. denoting or suggesting a free fall: a free-fall recession.n.3. free fall (defs. 1, 2).
* * *▪ physicsin mechanics, state of a body that moves freely in any manner in the presence of gravity. The planets, for example, are in free-fall in the gravitational field of the Sun. Newton's laws show that a body in free-fall follows an orbit such that the sum of the gravitational and inertial forces equals zero. This explains why an astronaut in a spacecraft orbiting the Earth experiences a condition of weightlessness: the Earth's gravitational pull is equal and opposite to the inertial—in this case, centrifugal—force because of the motion of the vehicle. Gravitational forces are never uniform, and therefore only the centre of mass is in free-fall. All other points of a body are subject to tidal (tidal friction) forces because they move in a slightly different gravitational (gravitation) field. The Earth is in free-fall, but the pull of the Moon is not the same at the Earth's surface as at its centre; the rise and fall of ocean tides occur because the oceans are not in perfect free-fall.
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Free-fall — is motion with no acceleration other than that provided by gravity. Since this definition does not specify velocity, it also applies to objects initially moving upward. Although the definition specifically excludes all other forces such as… … Wikipedia
free-fall — /free fawl /, v., free fell, free fallen, free falling, adj., n. v.i. 1. (of parachutists) to descend initially, as for a designated interval, in a free fall: The jumpers were required to free fall for eight seconds. adj. 2. denoting or… … Useful english dictionary
free fall — ˈfree fall also free fall noun [singular, uncountable] JOURNALISM FINANCE when prices on a financial market go down suddenly or the economy gets worse very quickly: • After closing at $19.125 per share on Tuesday, the shares went into a free fall … Financial and business terms
free fall — n [singular, U] 1.) the movement of someone or something through the air without engine power, for example before a ↑parachute opens after someone has jumped out of a plane in/into free fall ▪ The spacecraft is now in free fall towards the Earth … Dictionary of contemporary English
free fall — free falls also free fall 1) N VAR: oft into/in N If the value or price of something goes into free fall, it starts to fall uncontrollably. [JOURNALISM] Sterling went into free fall... The price did a free fall. 2) N UNCOUNT In parachuting, free… … English dictionary
free-fall — [frē′fôl′] n. FREE FALL (sense 2) vi. free fell [frē′fel′] free fallen [fē′fôl′ən] free falling to undergo, experience, or move in a free fall … English World dictionary
free fall — ► NOUN 1) downward movement under the force of gravity. 2) rapid descent or decline without means of stopping. ► VERB (free fall) ▪ move under the force of gravity; fall rapidly … English terms dictionary
Free Fall — ist der Originaltitel des Films Angst über den Wolken die Kurzform von Free Fall Tower Diese Seite ist eine Begriffsklärung zur Unterscheidung mehrerer mit demselben Wort bezeichneter Begriffe … Deutsch Wikipedia
Free Fall — Album par Jimmy Giuffre Sortie 1962 Durée 56:57 Genre jazz Label Columbia Records Critique All … Wikipédia en Français
free fall — free ,fall noun uncount 1. ) an occasion when a price or value suddenly becomes much lower 2. ) the part of a PARACHUTE jump when someone falls quickly toward the ground before the PARACHUTE opens ╾ free ,fall verb intransitive … Usage of the words and phrases in modern English