free-falling object

free-falling object
свободно падающее тело

English-Russian dictionary of geology. 2011.

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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 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. As such, it plays a fundamental role in setting the timescale for a wide… …   Wikipedia

  • Falling (physics) — Falling is descent under gravity. All objects have mass and in the presence of sufficiently massive objects such as planets or moons they experience a strong attraction due to gravity. This is known as weight. If the force of gravity is not… …   Wikipedia

  • Free will in theology — is an important part of the debate on free will in general. This article discusses the doctrine of free will as it has been, and is, interpreted within the various branches of Christianity, Judaism, Islam and Hinduism. In Christian thoughtIn… …   Wikipedia

  • Equations for a falling body — Under normal earth bound conditions, when objects move owing to a constant gravitational force a set of dynamical equations describe the resultant trajectories. For example, Newton s law of universal gravitation simplifies to F = mg , where m is… …   Wikipedia

  • Terminal velocity — A free falling object achieves its terminal velocity when the downward force of gravity ( Fg )equals the upward force of drag ( Fd ). This causes the net force on the object to be zero, resulting in an acceleration of zero. Mathematically an… …   Wikipedia

  • Controlled demolition hypothesis for the collapse of the World Trade Center — The controlled demolition hypothesis is a 9/11 conspiracy theory that claims the complete structural failure of the World Trade Center towers was not caused by the plane crash damage that occurred as part of the September 11, 2001 attacks, nor by …   Wikipedia

  • Gravitomagnetism — (sometimes Gravitoelectromagnetism, abbreviated GEM), refers to a set of formal analogies between Maxwell s field equations and an approximation to the Einstein field equations for general relativity, valid under certain conditions. For instance …   Wikipedia

  • Proper frame — A proper frame, or comoving frame, is a frame of reference that is attached to an object. The object in this frame is stationary within the frame, which is useful for many types of calculations. For example, a freely falling elevator is a proper… …   Wikipedia

  • Horizontal plane — In astronomy, geography, geometry and related sciences and contexts, a plane is said to be horizontal at a given point if it is locally perpendicular to the gradient of the gravity field, i.e., with the direction of the gravitational force (per… …   Wikipedia

  • Vertical direction — In astronomy, geography, geometry and related sciences and contexts, a direction passing by a given point is said to be vertical if it is locally aligned with the gradient of the gravity field, i.e., with the direction of the gravitational force… …   Wikipedia


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