- a(t) = a_t + α where the first term is the tangential acceleration and the second is the angular acceleration. (physicsforums.com)
- the tangential acceleration is R times the angular acceleration a_t=αR. (physicsforums.com)

- The unit tangent vector T (which is also the velocity vector, since the particle is moving with unit speed) also depends on time. (wikipedia.org)
- A force on a particle is a bound vector. (wikipedia.org)
- Typically, conditions of motion are specified by type of acceleration experienced by the particle. (scribd.com)

- The g-force (with g from gravitational) is a measurement of the type of acceleration that causes a perception of weight. (wikipedia.org)
- Despite the name, it is incorrect to consider g-force a fundamental force, as "g-force" (lower case character) is a type of acceleration that can be measured with an accelerometer. (wikipedia.org)

- The particle's 4-vector acceleration can be defined as the derivative with respect to proper time of its 4-velocity. (obscure.org)

- So now you need to know what a scalar quantity is and what a vector quantity is. (openstudy.com)
- Curvature is normally a scalar quantity, but one may also define a curvature vector that takes into account the direction of the bend in addition to its magnitude. (wikipedia.org)

- This is because the acceleration is causing the creature to slow down and change direction --in the same way that a ball thrown upwards (which experiences constant acceleration due to the earth's gravity) slows down to zero-velocity as it reaches its maximum height, and then changes direction to fall back down. (sparknotes.com)
- Thus, the standard gravitational acceleration at the Earth's surface produces g-force only indirectly, as a result of resistance to it by mechanical forces. (wikipedia.org)
- One g is the acceleration due to gravity at the Earth's surface and is the standard gravity (symbol: gn), defined as 7000980665000000000♠9.80665 metres per second squared, or equivalently 7000980665000000000♠9.80665 newtons of force per kilogram of mass. (wikipedia.org)

- Physical activity information was extracted from 100Hz raw triaxial acceleration data after calibration, removal of gravity and sensor noise, and identification of wear / non-wear episodes. (plos.org)
- Gravitation acting alone does not produce a g-force, even though g-forces are expressed in multiples of the acceleration of a standard gravity. (wikipedia.org)

- While acceleration is a vector quantity, g-force accelerations ("g-forces" for short) are often expressed as a scalar, with positive g-forces pointing downward (indicating upward acceleration), and negative g-forces pointing upward. (wikipedia.org)

- Objects allowed to free-fall in an inertial trajectory under the influence of gravitation only, feel no g-force acceleration, a condition known as zero-g (which means zero g-force). (wikipedia.org)

- Acceleration is a vector quantity, which means that it has both a direction and a magnitude. (reference.com)
- A vector in mathematics and physics is a geometric object that has both a magnitude or length and a direction. (wikimedia.org)
- A vector is frequently represented by a line segment with a definite direction, or graphically as an arrow, connecting an initial point A with a terminal point B. (wikimedia.org)

- These are examples of coordinate acceleration (a change in velocity) without a sensation of weight. (wikipedia.org)

- Newton's second law of motion deals with the acceleration of an object due to a net force. (coursehero.com)
- A force on an extended rigid body is a sliding vector. (wikipedia.org)
- A force on a non-rigid body is a bound vector. (wikipedia.org)
- The g-force acceleration (save for certain electromagnetic force influences) is the cause of an object's acceleration in relation to free-fall. (wikipedia.org)
- The g-force acceleration experienced by an object is due to the vector sum of all non-gravitational and non-electromagnetic forces acting on an object's freedom to move. (wikipedia.org)
- These mechanical forces actually produce the g-force acceleration on a mass. (wikipedia.org)
- In the absence of gravitational fields, or in directions at right angles to them, proper and coordinate accelerations are the same, and any coordinate acceleration must be produced by a corresponding g-force acceleration. (wikipedia.org)
- The term g-force is technically incorrect as it is a measure of acceleration, not force. (wikipedia.org)
- Thus, a g-force is a vector acceleration. (wikipedia.org)
- It is an acceleration that must be produced by a mechanical force, and cannot be produced by simple gravitation. (wikipedia.org)

- There were major differences in vector magnitude by time of day (d = 0.66). (plos.org)

- For other acceleration equations see the relativity FAQ article on the relativistic rocket . (obscure.org)

- To examine motor fluctuation, we developed a long-term monitoring portable device, gait rhythmogram (PGR) that measures distinguishably the accelerations induced by gaits [ 8 - 11 ]. (hindawi.com)

- acceleration and mass. (openstudy.com)

- Notice that the magnitude of the creature's velocity (i.e. the speed at which the creature is traveling) is high at t = - 2 , decreases considerably at t = 0 , and goes back up again at t = 2 , even though the acceleration is constant! (sparknotes.com)
- There are degrees, if you will, of backward pointing, from perpendicular and not affecting the travel vector, to nearly directly back and maximizing forward thrust, to directly back and catching maximal solar radiation. (slashdot.org)