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Definition of work and the joule unit

Forces and motion • Work and energy transfer

Key concepts

What you'll likely be quizzed about

  • Work is defined as the product of the force applied to an object and the distance that object moves in the direction of the force.
  • Mathematically, it is expressed as W = F × d, where W is work, F is the force, and d is the distance.
  • When a force causes an object to move, work is done on that object.

Flashcards

Test your knowledge with interactive flashcards

In what direction does work have to be done?

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Work is done when the force applied and the displacement of the object are in the same direction.

Key notes

Important points to keep in mind

Work is a measure of energy transfer.

A force acts over a distance to do work.

One joule equals one newton-meter.

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