# ⓘ Velocity ..

## Angular velocity

In physics, angular velocity refers to how fast an object rotates or revolves relative to another point, i.e. how fast the angular position or orientation of an object changes with time. There are two types of angular velocity: orbital angular velocity and spin angular velocity. Spin angular velocity refers to how fast a rigid body rotates with respect to its centre of rotation. Orbital angular velocity refers to how fast a point object revolves about a fixed origin, i.e. the time rate of change of its angular position relative to the origin. In general, angular velocity is measured in ang ...

## Flow velocity

In continuum mechanics the flow velocity in fluid dynamics, also macroscopic velocity in statistical mechanics, or drift velocity in electromagnetism, is a vector field used to mathematically describe the motion of a continuum. The length of the flow velocity vector is the flow speed and is a scalar. It is also called velocity field ; when evaluated along a line, it is called a velocity profile.

## Footspeed

Footspeed, or sprint speed, is the maximum speed at which a human can run. It is affected by many factors, varies greatly throughout the population, and is important in athletics and many sports, such as association football, rugby football, American football, track and field, hockey, baseball and basketball.

## Ground speed

Ground speed is the horizontal speed of an aircraft relative to the ground. An aircraft heading vertically would have a ground speed of zero. Information displayed to passengers through the entertainment system of airlines aircraft often gives the aircraft ground speed rather than airspeed. Ground speed can be determined by the vector sum of the aircrafts true airspeed and the current wind speed and direction; a headwind subtracts from the ground speed, while a tailwind adds to it. Winds at other angles to the heading will have components of either headwind or tailwind as well as a crosswi ...

## Inertia

Inertia is the resistance of any physical object to any change in its velocity. This includes changes to the objects speed, or direction of motion. An aspect of this property is the tendency of objects to keep moving in a straight line at a constant speed, when no forces act upon them. Inertia comes from the Latin word, iners, meaning idle, sluggish. Inertia is one of the primary manifestations of mass, which is a quantitative property of physical systems. Isaac Newton defined inertia as his first law in his Philosophiæ Naturalis Principia Mathematica, which states: The vis insita, or inna ...

## Nerve conduction velocity

Nerve conduction velocity is an important aspect of nerve conduction studies. It is the speed at which an electrochemical impulse propagates down a neural pathway. Conduction velocities are affected by a wide array of factors, including age, sex, and various medical conditions. Studies allow for better diagnoses of various neuropathies, especially demyelinating diseases as these conditions result in reduced or non-existent conduction velocities.

## ⓘ Velocity

• The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent
• There are two types of angular velocity orbital angular velocity and spin angular velocity Spin angular velocity refers to how fast a rigid body rotates
• The radial velocity of an object with respect to a given point is the rate of change of the distance between the object and the point. That is, the radial
• In physics specifically, celestial mechanics escape velocity is the minimum speed needed for a free, non - propelled object to escape from the gravitational
• Terminal velocity is the maximum velocity attainable by an object as it falls through a fluid air is the most common example It occurs when the sum
• The phase velocity of a wave is the rate at which the phase of the wave propagates in space. This is the velocity at which the phase of any one frequency
• WWE Velocity is a professional wrestling television program that was produced by World Wrestling Entertainment WWE It replaced two syndicated WWE shows
• Apache Velocity is a Java - based template engine that provides a template language to reference objects defined in Java code. It aims to ensure clean separation
• In continuum mechanics the flow velocity also macroscopic velocity in fluid dynamics or drift velocity in electromagnetism, is a vector field used to
• The velocity of money or the velocity of circulation of money is a measure of the number of times that the average unit of currency is used to purchase
• In robotics and motion planning, a velocity obstacle, commonly abbreviated VO, is the set of all velocities of a robot that will result in a collision
• The group velocity of a wave is the velocity with which the overall envelope shape of the wave s amplitudes - known as the modulation or envelope of the