## 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...

## angle

Overview page. Subjects: Mathematics — Dentistry.

(between vectors)

Given vectors **a** and **b**, let and be directed line-segments representing **a** and **b**. Then the angle *θ* between the vectors **a** and **b** is the angle ∠*AOB*, where *θ* is taken...

## area sampling

Overview page. Subjects: Public Health and Epidemiology — Probability and Statistics.

Sampling with primary sampling units (see cluster sampling) that are non-overlapping regions of the earth's surface. Examples of such regions are parishes, counties, fields, political...

## buddy system

Overview page. Subjects: Computing — Public Health and Epidemiology.

A method of encouraging people to care for one another, such as for several isolated old people to stay in touch by means of daily phone calls or visits or for patients with AIDS, so that...

## cartogram

Overview page. Subjects: Public Health and Epidemiology — Probability and Statistics.

A diagrammatic map that presents statistical information visually. This may be done in various ways, the best known of which is a choropleth map, in which regions are color-coded or...

## 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.

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