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Calculate work done using W = F × s

Forces and motion • Work and energy transfer

Key concepts

What you'll likely be quizzed about

  • Work is defined as the energy transferred when a force causes an object to move.
  • The standard unit of work is the joule (J).
  • One joule is the amount of work done when a force of one newton moves an object one meter in the direction of the force.

Flashcards

Test your knowledge with interactive flashcards

Can the work done on an object be negative?

Click to reveal answer

Yes, work can be negative if the applied force opposes the motion.

Key notes

Important points to keep in mind

Work is measured in joules (J).

Use the formula W = F × s for calculations.

Work done can be zero if no distance is moved.

Always consider the direction of the force.

Negative work occurs with opposing forces.

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