## acceleration

Overview page. Subjects: Mathematics — Sports and Exercise Medicine.

The rate of change in velocity or the change in velocity occurring over a given time interval: acceleration = change of velocity/time. It is usually expressed as metres per second squared...

## air resistance

Overview page. Subjects: Sports and Exercise Medicine — Mathematics.

The resistance to motion experienced by an object moving through the air caused by the flow of air over the surface of the object. It is a force that affects, for example, the speed of a...

## centre of gravity

Overview page. Subjects: Sports and Exercise Medicine — Mathematics.

The point in a body at which all external forces can be taken to act. In a uniform gravitational field this is the same as the body's centre of mass. However, in a non-uniform gravitational...

## coefficient of restitution

Overview page. Subjects: Sports and Exercise Medicine — Mathematics.

A parameter associated with the behaviour of two bodies during a collision. Suppose that two billiard balls are travelling in the same straight line and have velocities *u*
_{1} and *u*null...

## cognitive model

Overview page. Subjects: Sports and Exercise Medicine — Computing.

A model adopted by sport psychologists to study achievement orientated attributions. According to the model, athletes process information about outcomes (e.g. winning or losing) according...

## conservation of linear momentum

Overview page. Subjects: Sports and Exercise Medicine — Mathematics.

When the total force acting on a system is zero, the linear momentum of the system remains constant for all time. This fact is called the principle of conservation of linear momentum.

null...## displacement

Overview page. Subjects: Mathematics — Sports and Exercise Medicine.

*s*. A specified distance in a specified direction. It is the vector equivalent of the scalar distance.

## extensibility

Overview page. Subjects: Sports and Exercise Medicine — Computing.

The capability of a programming language to accept definitions of new constructs.

## internal force

Overview page. Subjects: Sports and Exercise Medicine — Mathematics.

When a system of particles or a rigid body is being considered as a whole, an internal force is a force exerted by one particle of the system on another, or by one part of the rigid body on...

## line of action

Overview page. Subjects: Sports and Exercise Medicine — Mathematics.

The line of action of a force is a straight line through the point of application of the force and parallel to the direction of the force.