Acceleration

thumb|upright=1.35|The shapes of two massive galaxies in this image evolved under the effects of gravity.

{dt} = \frac{d^2\mathbf{x{dt^2} | dimension = wikidata

type of inertial force

force that makes a moving body follow a curved path

acceleration of an object caused by gravity

rate of change of angular velocity

thumb|A typical accelerometer

hypothesis that inertial and gravitational masses are equivalent

rate of change of acceleration

thumb|In straight and level flight, lift (L) equals weight (W). In a steady level banked turn of 60°, lift equals double the weight (L = 2W). The pilot experiences 2 g and a doubled weight. The steeper the bank, the greater the g-forces. thumb|This Top Fuel dragster can accelerate from zero to in 0.86 seconds. This is a horizontal acceleration of 5.3 g. Combining this with the vertical g-force in the stationary case using the [[Pythagorean theorem yields a g-force of 5.4 g.]]

increase in the expansion rate of the universe, attributed to dark energy

thumb|MSF830 anti-g suit trousers and cummerbund fitted over a flying suit

prediction that an accelerating observer will observe blackbody radiation where an inertial observer would observe none

maximum ground acceleration during an earthquake at a location

coordinate system on a subset of Minkowski space adapted to a uniformly accelerating observer undergoing hyperbolic motion

In the theory of relativity, four-acceleration is a four-vector (vector in four-dimensional spacetime) that is analogous to classical acceleration (a three-dimensional vector, see three-acceleration in special relativity). Four-acceleration has applications in areas such as the annihilation of antiprotons, resonance of strange particles and radiation of an accelerated charge.

G-force induced loss of consciousness (abbreviated as G-LOC, pronounced "JEE-lock") is a term generally used in aerospace physiology to describe a loss of consciousness occurring from excessive and sustained g-forces draining blood away from the brain causing cerebral hypoxia. The condition is most likely to affect pilots of high performance fighter and aerobatic aircraft or astronauts, but is possible on some extreme amusement park rides. G-LOC incidents have caused fatal accidents in high performance aircraft capable of sustaining high g for extended periods. High-g training for pilots of hi

physical acceleration experienced by an object

thumb|right|300px|Simulated stages of a greyout. A greyout is a transient loss of vision characterized by a perceived dimming of light and color, sometimes accompanied by a loss of peripheral vision. It is a precursor to fainting or a blackout and is caused by hypoxia (low brain oxygen level), often due to a loss of blood pressure.

term in mechanics

motion of an object with constant proper acceleration in special relativity

acceleration phenomenon of oft-reflected charged particles

higher derivatives of the position vector with respect to time

training done by aviators and astronauts

thumb|Michael Collins (astronaut)|Michael Collins during centrifuge training Hypergravity is defined as the condition where the force of gravity (real or perceived) exceeds that on the surface of the Earth. This is expressed as being greater than 1 g. Hypergravity conditions are created on Earth for research on human physiology in aerial combat and space flight, as well as testing of materials and equipment for space missions. Manufacturing of titanium aluminide turbine blades in 20 g is being explored by researchers at the European Space Agency (ESA) via an 8-meter wide Large Diamet

follow by differentiation of velocity with respect to time in the context of special relativity