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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 unull...

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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displacement

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

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

2. See electric displacement.

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.