Energy (HSC SSCE Physics): Flashcards

Energy an object possesses due to its motion

Stored energy due to forces between objects in a system

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

$U_g = mgh$

Joule (J), equal to $\text{kg} \cdot \text{m}^2 \cdot \text{s}^{-2}$

Scalar (has magnitude only, no direction)

Energy cannot be created or destroyed, only transformed

$W = F_{\parallel}s = Fs\cos\theta$

$W_{\text{net}} = \Delta E_k$ (net work = change in KE)

Kinetic energy + gravitational potential energy