This book provides students and scholars with a fail-safe guide to the key concepts in the field of Sport & Exercise Science. Intelligently cross-referenced entries provide a sound map of the multi-disciplinary demands of sport related courses including physical and biological sciences, social science and education. The entries use clear definitions, examples, and suggestions for further reading to explore each discipline.

Work, Energy and Power

Work, energy and power

Forces are commonly applied over a certain distance. For example, a bobsleigh team will push their sleigh over a short distance in order to accelerate it. If a force is applied over a distance then a certain amount of work has been done. Work (Joules, J) is calculated by multiplying the magnitude of the force (Newtons, N) by the distance (metres, m) the body moves in the direction the force has moved it.

Power is a commonly used word whose meaning in biomechanics is the rate at which work is performed. It is often more important to be a powerful athlete, rather than just being ‘strong’. The difference is that power is related to time, so if one particular ...

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