Work, Energy, and Power (Leaving Cert Physics): Flashcards

Work is done when force causes object to move through distance in direction of that force

Force AND movement in direction of that force

Zero work done

$W = F \times s$

Work done (measured in joules)

Force applied (measured in newtons)

Displacement in direction of force (measured in metres)

Scalar quantity (has magnitude but no direction)

Joule, symbol $J$

Work done when $1$ N acts through $1$ m in direction of force

James Prescott Joule (1818-1889), English physicist

No work done by that force