Changes in energy (AQA GCSE Physics Combined Science): Flashcards

Kinetic, gravitational potential, elastic potential

Energy stored in moving objects

$E_k = \frac{1}{2}mv^2$

Square it ($v \times v$)

Doubles the kinetic energy (directly proportional)

Increases it 4 times (proportional to $v^2$)

Energy gained when object raised above ground

$E_p = mgh$

10 N/kg (gravitational field strength)

Energy stored in a stretched spring

$E_e = \frac{1}{2}ke^2$

Joules (J)