# Position-time graph kinematics

1. Aug 4, 2015

### Hannahj1

1. The problem statement, all variables and given/known data
Calculate the average velocity after 11 s.

2. Relevant equations
v=d/t

3. The attempt at a solution
I need to find the total displacement to find average velocity. I assumed the displacement was -4 as the graph goes up then back down to 0 then -4 so total is just -4. Is that a correct? Thank you!

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2. Aug 5, 2015

### tommyxu3

Yes, based on your graph, the magnitude of the displacement during the 11 sec is $-4\text{m},$ so you can calculate its average velocity and don't forget its direction.