downward acceleration

downward acceleration
ускорение в направлении голова — ноги

English-russian astronautics dictionary. - M.: Military Publishing house. . 1964.

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  • Proper acceleration — [Edwin F. Taylor John Archibald Wheeler (1966 1st ed. only) Spacetime Physics (W.H. Freeman, San Francisco) ISBN 0 7167 0336 X] is the physical acceleration experienced by an object. It equals the rate of change of proper velocity with respect to …   Wikipedia

  • gravitation — gravitational, adj. gravitationally, adv. /grav i tay sheuhn/, n. 1. Physics. a. the force of attraction between any two masses. Cf. law of gravitation. b. an act or process caused by this force. 2. a sinking or falling …   Universalium

  • Buoyancy — The forces at work in buoyancy In physics, buoyancy (  / …   Wikipedia

  • Apparent weight — An object s weight, henceforth called actual weight , is the downward force exerted upon it by a gravitational field. By contrast, an object s apparent weight is the (usually upward) force (the normal force , or reaction force ), typically… …   Wikipedia

  • Mass versus weight — The chains on the swing hold all the child’s weight. If one were to stand behind her at the bottom of the arc and try to stop her, one would be acting against her inertia, which arises purely from mass, not weight. In everyday usage, the mass of… …   Wikipedia

  • Microburst — Illustration of a microburst. Note the downward motion of the air until it hits ground level. It then spreads outward in all directions. The wind regime in a microburst is opposite to that of a tornado …   Wikipedia

  • G-force — (also G force, g load) is a measurement of an object s acceleration expressed in g s. It is proportional to the reaction force that an object experiences as a result of this acceleration or, more correctly, as a result of the net effect of this… …   Wikipedia

  • Lift (force) — For other uses, see Lift. Boeing 747 8F landing A fluid flowing past the surface of a body exerts a surface force on it. Lift is the component of this force that is perpendicular to the …   Wikipedia

  • Air-time — is the feeling of weightlessness or negative gravity force experienced on a roller coaster or other amusement rides. On roller coasters this feeling is usually achieved by the train going over a hill. Hypercoasters such as Magnum XL 200 at Cedar… …   Wikipedia

  • Elevator — For other uses, see Elevator (disambiguation). A set of lifts in the lower level of a London Underground station. The arrows indicate each elevator s position and direction of travel …   Wikipedia

  • Sub-orbital spaceflight — A sub orbital spaceflight (or sub orbital flight) is a spaceflight in which the spacecraft reaches space, but its trajectory intersects the atmosphere or surface of the gravitating body from which it was launched, so that it does not complete one …   Wikipedia


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