Speed, Displacement, Velocity, and Acceleration (Junior Cert Science): Flashcards

$\text{speed} = \frac{\text{distance}}{\text{time}}$

$\text{m/s}$ or $\text{m s}^{-1}$

Distance travelled in a given direction

Speed in a given direction

Speed of the object

Object is stationary (zero speed)

Change in velocity per second

$\text{m/s}^2$ or $\text{m s}^{-2}$

Acceleration

Approximately $10 \text{ m s}^{-2}$