Work, energy, and power (AQA A-Level Physics): Flashcards

Force causing motion × distance travelled in force direction

$W = F \cdot s \cdot \cos \theta$

Angle between force direction and motion direction

Rate at which work is done or energy is transferred

$P = \frac{\Delta W}{\Delta t}$

$P = F \cdot v$

Area under the graph

Area under force-displacement graph

How effectively system converts input energy to useful output

$\frac{\text{useful output power}}{\text{input power}} \times 100$