PrepZii

formula

Average Velocity & Average Speed

Average velocity uses total displacement over total time. Average speed uses total distance travelled over total time.

Average velocity

\vec v_{av}=\bar v=\langle v\rangle=\frac{\vec r_f-\vec r_i}{\Delta t}

Average speed

\text{Average speed}=\frac{\text{Total distance travelled}}{\text{Total time taken}}

$\vec r_i$

initial position

$\vec r_f$

final position

$\Delta t$

time interval