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Free fall

Index Free fall

In Newtonian physics, free fall is any motion of a body where gravity is the only force acting upon it. [1]

95 relations: A. Leo Stevens Parachute Medal, Aerodynamics, Aircrew, Alan Eustace, Alan Magee, Aristotelian physics, Aristotle, Atmosphere, Attacks on parachutists, Ballistics, BBC News, California, Classical mechanics, Clavicle, CNN, Czech Republic, Czechoslovakia, David Scott, Dayton, Ohio, De Motu Antiquiora, Density of air, Distinguished Flying Cross (United States), Drag (physics), Drag coefficient, Drogue parachute, Drop tube, Dwight D. Eisenhower, Eötvös experiment, Elliptic orbit, Equations for a falling body, Equivalence principle, Felix Baumgartner, Force, Free fall, Free-fall time, Fuselage, G-force, Galileo Galilei, Galileo's Leaning Tower of Pisa experiment, General relativity, German Peruvians, Gravitational two-body problem, Gravity, Guinness World Records, Harmon Trophy, High-altitude military parachuting, Ivan Chisov, Jat Airways, JAT Flight 367, John Stapp, ..., Joseph Kittinger, Juliane Koepcke, Kepler's laws of planetary motion, LANSA Flight 508, Líneas Aéreas Nacionales S.A., Lightning, Lockheed L-188 Electra, Luke Aikins, Mach number, Mass, Michel Fournier (adventurer), Micro-g environment, Military, Newton's cannonball, Newton's law of universal gravitation, Nicholas Alkemade, Normal force, Oak leaf cluster, Orbital eccentricity, Pan Am Flight 103, Parachute, Peruvian Amazonia, Physical body, Physics (Aristotle), Project Excelsior, Red Bull Stratos, Reduced-gravity aircraft, Reynolds number, Saratov, Serbia, Soviet Union, Spacecraft, Srbská Kamenice, Standard gravitational parameter, Storey, Terminal velocity, The New York Times, Thunderstorm, Tiny Broadwick, United States Army, Vesna Vulović, Weightlessness, Wingsuit flying, Wright-Patterson Air Force Base, Yevgeni Nikolayevich Andreyev. Expand index (45 more) »

A. Leo Stevens Parachute Medal

The A. Leo Stevens Parachute Medal is named after Albert Leo Stevens.

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Aerodynamics, from Greek ἀήρ aer (air) + δυναμική (dynamics), is the study of the motion of air, particularly its interaction with a solid object, such as an airplane wing.

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Aircrew, also called flight crew, are personnel who operate an aircraft while in flight.

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Alan Eustace

Robert Alan Eustace is an American computer scientist who served as Senior Vice President of Knowledge at Google.

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Alan Magee

Alan Eugene Magee (January 13, 1919 – December 20, 2003) was an American airman during World War II who survived a 22,000-foot (6,700 m) fall from his damaged B-17 Flying Fortress.

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Aristotelian physics

Aristotelian physics is a form of natural science described in the works of the Greek philosopher Aristotle (384–).

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Aristotle (Ἀριστοτέλης Aristotélēs,; 384–322 BC) was an ancient Greek philosopher and scientist born in the city of Stagira, Chalkidiki, in the north of Classical Greece.

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An atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body.

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Attacks on parachutists

Attacks on parachutists, as defined by the law of war, is when pilots, aircrews, and passengers are attacked while descending by parachute from disabled aircraft during wartime.

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Ballistics is the field of mechanics that deals with the launching, flight, behavior, and effects of projectiles, especially bullets, unguided bombs, rockets, or the like; the science or art of designing and accelerating projectiles so as to achieve a desired performance.

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BBC News

BBC News is an operational business division of the British Broadcasting Corporation (BBC) responsible for the gathering and broadcasting of news and current affairs.

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California is a state in the Pacific Region of the United States.

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Classical mechanics

Classical mechanics describes the motion of macroscopic objects, from projectiles to parts of machinery, and astronomical objects, such as spacecraft, planets, stars and galaxies.

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The clavicle or collarbone is a long bone that serves as a strut between the shoulder blade and the sternum or breastbone.

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Cable News Network (CNN) is an American basic cable and satellite television news channel and an independent subsidiary of AT&T's WarnerMedia.

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Czech Republic

The Czech Republic (Česká republika), also known by its short-form name Czechia (Česko), is a landlocked country in Central Europe bordered by Germany to the west, Austria to the south, Slovakia to the east and Poland to the northeast.

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Czechoslovakia, or Czecho-Slovakia (Czech and Československo, Česko-Slovensko), was a sovereign state in Central Europe that existed from October 1918, when it declared its independence from the Austro-Hungarian Empire, until its peaceful dissolution into the:Czech Republic and:Slovakia on 1 January 1993.

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David Scott

David Randolph Scott (born June 6, 1932) (Col, USAF, Ret.) is an American engineer, former NASA astronaut, retired U.S. Air Force officer and former test pilot.

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Dayton, Ohio

Dayton is the sixth-largest city in the state of Ohio and the county seat of Montgomery County.

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De Motu Antiquiora

De Motu Antiquiora ("The Older Writings on Motion"), or simply De Motu, is Galileo Galilei's early written work on motion.

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Density of air

The density of air ρ (Greek: rho) (air density) is the mass per unit volume of Earth's atmosphere.

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Distinguished Flying Cross (United States)

The Distinguished Flying Cross is a military decoration awarded to any officer or enlisted member of the United States Armed Forces who distinguishes himself or herself in support of operations by "heroism or extraordinary achievement while participating in an aerial flight, subsequent to November 11, 1918.".

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Drag (physics)

In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid.

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Drag coefficient

In fluid dynamics, the drag coefficient (commonly denoted as: \scriptstyle C_\mathrm d\,, \scriptstyle C_\mathrm x\, or \scriptstyle C_\mathrm w\) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment, such as air or water.

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Drogue parachute

A drogue parachute is a parachute designed to be deployed from a rapidly moving object in order to slow the object, to provide control and stability, or as a pilot parachute to deploy a larger parachute.

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Drop tube

In physics and materials science, a drop tower or drop tube is a structure used to produce a controlled period of weightlessness for an object under study.

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Dwight D. Eisenhower

Dwight David "Ike" Eisenhower (October 14, 1890 – March 28, 1969) was an American army general and statesman who served as the 34th President of the United States from 1953 to 1961.

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Eötvös experiment

The Eötvös experiment was a famous physics experiment that measured the correlation between inertial mass and gravitational mass, demonstrating that the two were one and the same, something that had long been suspected but never demonstrated with the same accuracy.

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Elliptic orbit

In astrodynamics or celestial mechanics, an elliptic orbit or elliptical orbit is a Kepler orbit with an eccentricity of less than 1; this includes the special case of a circular orbit, with eccentricity equal to 0.

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Equations for a falling body

A set of equations describe the resultant trajectories when objects move owing to a constant gravitational force under normal Earth-bound conditions.

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Equivalence principle

In the theory of general relativity, the equivalence principle is any of several related concepts dealing with the equivalence of gravitational and inertial mass, and to Albert Einstein's observation that the gravitational "force" as experienced locally while standing on a massive body (such as the Earth) is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference.

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Felix Baumgartner

Felix Baumgartner (born 20 April 1969) is an Austrian skydiver, daredevil, and BASE jumper.

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In physics, a force is any interaction that, when unopposed, will change the motion of an object.

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Free fall

In Newtonian physics, free fall is any motion of a body where gravity is the only force acting upon it.

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Free-fall time

The free-fall time is the characteristic time that would take a body to collapse under its own gravitational attraction, if no other forces existed to oppose the collapse.

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The fuselage (from the French fuselé "spindle-shaped") is an aircraft's main body section.

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The gravitational force, or more commonly, g-force, is a measurement of the type of acceleration that causes a perception of weight.

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Galileo Galilei

Galileo Galilei (15 February 1564Drake (1978, p. 1). The date of Galileo's birth is given according to the Julian calendar, which was then in force throughout Christendom. In 1582 it was replaced in Italy and several other Catholic countries with the Gregorian calendar. Unless otherwise indicated, dates in this article are given according to the Gregorian calendar. – 8 January 1642) was an Italian polymath.

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Galileo's Leaning Tower of Pisa experiment

MB, ogg/Theora format). Leaning Tower of Pisa where the experiment supposedly took place. Nieuwe Kerk in Delft, where the experiment took place In 1589–92, the Italian scientist Galileo Galilei (then professor of mathematics at the University of Pisa) is said to have dropped two spheres of different masses from the Leaning Tower of Pisa to demonstrate that their time of descent was independent of their mass, according to a biography by Galileo's pupil Vincenzo Viviani, composed in 1654 and published in 1717.

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General relativity

General relativity (GR, also known as the general theory of relativity or GTR) is the geometric theory of gravitation published by Albert Einstein in 1915 and the current description of gravitation in modern physics.

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German Peruvians

German Peruvians are Peruvian citizens of full or partial German ancestry.

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Gravitational two-body problem

←For further relevant mathematical developments see also Two-body problem, also Kepler orbit, and Kepler problem, and Equation of the center – Analytical expansions The gravitational two-body problem concerns the motion of two point particles that interact only with each other, due to gravity.

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Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another.

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Guinness World Records

Guinness World Records, known from its inception in 1955 until 2000 as The Guinness Book of Records and in previous United States editions as The Guinness Book of World Records, is a reference book published annually, listing world records both of human achievements and the extremes of the natural world.

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Harmon Trophy

The Harmon Trophy is a set of three international trophies, to be awarded annually to the world's outstanding aviator, aviatrix, and aeronaut (balloon or dirigible).

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High-altitude military parachuting

High-altitude military parachuting (or military free fall (MFF)) is a method of delivering military personnel, military equipment, and other military supplies from a transport aircraft at a high altitude via free-fall parachute insertion.

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Ivan Chisov

Ivan Mikhailovich Chisov (Иван Михайлович Чисов; 1916–1986) was a Soviet Air Force lieutenant who survived a fall of approximately 7,000 meters (23,000 feet).

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Jat Airways

Jat Airways (Јат ервејз Jat ervejz, stylized as JatAirways) was the national flag carrier and largest airline of Serbia, and formerly Yugoslavia.

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JAT Flight 367

JAT Yugoslav Airlines Flight 367 was a McDonnell Douglas DC-9-32 aircraft (registration YU-AHT) which exploded shortly after overflying NDB Hermsdorf, East Germany, while en route from Stockholm to Belgrade on 26 January 1972.

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John Stapp

Colonel John Paul Stapp (July 11, 1910 – November 13, 1999), M.D., Ph.D., was an American career U.S. Air Force officer, flight surgeon, physician, biophysicist, and pioneer in studying the effects of acceleration and deceleration forces on humans.

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Joseph Kittinger

Joseph William Kittinger II (born July 27, 1928) is a retired colonel in the United States Air Force and a USAF Command Pilot.

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Juliane Koepcke

Juliane Koepcke (b. 10 October 1954 in Lima, Peru), also known by her married name Juliane Diller, is a German mammalogist.

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Kepler's laws of planetary motion

In astronomy, Kepler's laws of planetary motion are three scientific laws describing the motion of planets around the Sun.

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LANSA Flight 508

LANSA Flight 508 was a Lockheed L-188A Electra turboprop, registered OB-R-941, operated as a scheduled domestic passenger flight by Lineas Aéreas Nacionales Sociedad Anonima (LANSA), that crashed in a thunderstorm en route from Lima to Pucallpa, Peru on December 24, 1971, killing 91 people–all 6 of its crew and 85 of its 86 passengers.

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Líneas Aéreas Nacionales S.A.

Lineas Aéreas Nacionales S.A. (LANSA) was a Peruvian commercial airline headquartered in Peru, which was established in 1963.

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Lightning is a sudden electrostatic discharge that occurs typically during a thunderstorm.

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Lockheed L-188 Electra

The Lockheed L-188 Electra is an American turboprop airliner built by Lockheed.

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Luke Aikins

Luke Aikins (born November 21, 1973) is an American professional skydiver, BASE jumper, pilot, and aerial photographer.

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Mach number

In fluid dynamics, the Mach number (M or Ma) is a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound.

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Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied.

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Michel Fournier (adventurer)

Michel Fournier (born 9 May 1944) is a French adventurer and retired Air Force colonel.

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Micro-g environment

The term micro-g environment (also µg, often referred to by the term microgravity) is more or less a synonym for weightlessness and zero-g, but indicates that g-forces are not quite zero—just very small.

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A military or armed force is a professional organization formally authorized by a sovereign state to use lethal or deadly force and weapons to support the interests of the state.

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Newton's cannonball

Newton's cannonball was a thought experiment Isaac Newton used to hypothesize that the force of gravity was universal, and it was the key force for planetary motion.

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Newton's law of universal gravitation

Newton's law of universal gravitation states that a particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

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Nicholas Alkemade

Flight Sergeant Nicholas Stephen Alkemade (10 December 1922 – 22 June 1987) was a rear gunner in Royal Air Force Avro Lancaster heavy bombers during World War II, who survived—without a parachute—a fall of 18,000 feet (5500 m) when abandoning his out-of-control, burning aircraft over Germany.

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Normal force

In mechanics, the normal force F_n\ is that component of the contact force that is perpendicular to the surface that an object contacts.

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Oak leaf cluster

An oak leaf cluster is a miniature bronze or silver twig of four oak leaves with three acorns on the stem that is authorized by the United States Armed Forces as a ribbon device for a specific set of decorations and awards of the Department of Defense, Department of the Army, and Department of the Air Force to denote subsequent decorations and awards.

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Orbital eccentricity

The orbital eccentricity of an astronomical object is a parameter that determines the amount by which its orbit around another body deviates from a perfect circle.

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Pan Am Flight 103

Pan Am Flight 103 was a regularly scheduled Pan Am transatlantic flight from Frankfurt to Detroit via London and New York.

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A parachute is a device used to slow the motion of an object through an atmosphere by creating drag (or in the case of ram-air parachutes, aerodynamic lift).

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Peruvian Amazonia

The Peruvian Amazonia (Amazonía del Perú) is the area of the Amazon rainforest included within the country of Peru, from east of the Andes to the borders with Ecuador, Colombia, Brazil and Bolivia.

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Physical body

In physics, a physical body or physical object (or simply a body or object) is an identifiable collection of matter, which may be constrained by an identifiable boundary, and may move as a unit by translation or rotation, in 3-dimensional space.

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Physics (Aristotle)

The Physics (Greek: Φυσικὴ ἀκρόασις Phusike akroasis; Latin: Physica, or Naturalis Auscultationes, possibly meaning "lectures on nature") is a named text, written in ancient Greek, collated from a collection of surviving manuscripts known as the Corpus Aristotelicum because attributed to the 4th-century BC philosopher, teacher, and mentor of Macedonian rulers, Aristotle.

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Project Excelsior

Project Excelsior was a series of parachute jumps made by Joseph Kittinger of the United States Air Force in 1959 and 1960 from helium balloons in the stratosphere.

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Red Bull Stratos

Red Bull Stratos was a space diving project involving Austrian skydiver Felix Baumgartner.

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Reduced-gravity aircraft

A reduced-gravity aircraft is a type of fixed-wing aircraft that provides brief near-weightless environments for training astronauts, conducting research and making gravity-free movie shots.

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Reynolds number

The Reynolds number is an important dimensionless quantity in fluid mechanics used to help predict flow patterns in different fluid flow situations.

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Saratov (p) is a city and the administrative center of Saratov Oblast, Russia, and a major port on the Volga River located upstream (north) of Volgograd.

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Serbia (Србија / Srbija),Pannonian Rusyn: Сербия; Szerbia; Albanian and Romanian: Serbia; Slovak and Czech: Srbsko,; Сърбия.

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Soviet Union

The Soviet Union, officially the Union of Soviet Socialist Republics (USSR) was a socialist state in Eurasia that existed from 1922 to 1991.

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A spacecraft is a vehicle or machine designed to fly in outer space.

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Srbská Kamenice

Srbská Kamenice (Windisch Kamnitz) is a village in the Czech Republic, Ústí nad Labem Region.

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Standard gravitational parameter

In celestial mechanics, the standard gravitational parameter μ of a celestial body is the product of the gravitational constant G and the mass M of the body.

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A storey (British English) or story (American English) is any level part of a building with a floor that could be used by people (for living, work, storage, recreation).

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Terminal velocity

Terminal velocity is the highest velocity attainable by an object as it falls through a fluid (air is the most common example).

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The New York Times

The New York Times (sometimes abbreviated as The NYT or The Times) is an American newspaper based in New York City with worldwide influence and readership.

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A thunderstorm, also known as an electrical storm, lightning storm, or thundershower, is a storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere, known as thunder.

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Tiny Broadwick

Ready to drop Georgia Ann Thompson Broadwick (April 8, 1893 in Oxford, North Carolina – 1978 in California), or Georgia Broadwick, was an American pioneering parachutist.

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United States Army

The United States Army (USA) is the land warfare service branch of the United States Armed Forces.

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Vesna Vulović

Vesna Vulović (Весна Вуловић;; 3 January 1950 23 December 2016) was a Serbian flight attendant.

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Weightlessness, or an absence of weight, is an absence of stress and strain resulting from externally applied mechanical contact-forces, typically normal forces (from floors, seats, beds, scales, etc.). Counterintuitively, a uniform gravitational field does not by itself cause stress or strain, and a body in free fall in such an environment experiences no g-force acceleration and feels weightless.

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Wingsuit flying

Wingsuit flying (or wingsuiting) is the sport of flying through the air using a wingsuit which adds surface area to the human body to enable a significant increase in lift.

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Wright-Patterson Air Force Base

Wright-Patterson Air Force Base (WPAFB) is a United States Air Force base and census-designated place just east of Dayton, Ohio, in Greene and Montgomery counties.

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Yevgeni Nikolayevich Andreyev

Yevgeni (Eugene) Nikolayevich Andreyev (Евгений Андреев; 4 September 1926 – 9 February 2000) was a colonel in the Soviet Air Force.

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Falling (gravity), Falling (physics), Falling from a plane, Free Fall, Free-f+all, Free-fall, Free-falling, Freefall, Freefall (physics), Freefalling, Freeflight, Highest sky dive, Law of free fall.


[1] https://en.wikipedia.org/wiki/Free_fall

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