Question

The following graph describes the change in position of an object during a 7 second interval. What is the average velocity during the entire duration of motion?

Answer 1

Answer:

$\overline{v}=0\ m/s$

Explanation:

$\boxed{average\ velocity\ (\overline{v})=\frac{total\ displacement\ (\Sigma s)}{total\ time\ (\Sigma t)} }$

Given:

initial position = 0 m

final position = 0 m

initial time = 0 s

final time = 7 s

$\boxed{\Sigma s=final\ position-initial\ position}$

$\Sigma s=0-0$

    $=0\ m$

$\boxed{\Sigma =final\ time-initial\ time}$

$\Sigma t=7-0$

    $=7\ s$

$\displaystyle\overline{v}=\frac{\Sigma s}{\Sigma t}$

  $\displaystyle=\frac{0}{7}$

  $=0\ m/s$

*Notes*

If the question asking for average speed (instead of average velocity), then the ∑s is total distance which ∑s = (6 + 6) m = 12 m