Motion Along a Straight Line (HSC SSCE Physics): Flashcards

Coordinate system with fixed origin to measure positions

Average position of all matter in an object

Scalar - total path length with no direction

Vector - change in position with direction, symbol $\vec{s}$

$v = \frac{s}{t}$ where $s$ is distance, $t$ is time

Vector - rate of change of displacement, $\vec{v} = \frac{\Delta\vec{s}}{\Delta t}$

Speed

Distance travelled

$v_{\text{avg}} = \frac{\Delta d}{\Delta t}$

$\vec{v}_o - \vec{v}_d$ (observer minus distant object velocity)