How do you find the average velocity over an interval?

Question

asked Jun 12, 2020 4.8k views

1 Answer

Basti Funck · Answer 1 · 2020-06-17T08:42:43+0000

If the moving object is undergoing constant acceleration, then

$v_(\rm avg)=\frac{v_i+v_f}2$

(take the average of the initial and final velocities, if they're given)

If you don't know the acceleration or initial/final velocities, then you have to resort to the usual definition,

$v_(\rm avg)=(\Delta x)/(\Delta t)$

where
$\Delta x$ is the change in position and
$\Delta t$ is the duration of the interval.