I am given a velocity versus time graph for a runner. For it, I had to figure out the average velocity for the entire 16 s interval (for this, I got 2 m/s). Now they want me to find the displacement of the runner in the first 15.4 s.

Question

I am given a velocity versus time graph for a runner. For it, I had to figure out the average velocity for the entire 16 s interval (for this, I got 2 m/s). Now they want me to find the displacement of the runner in the first 15.4 s. 
I know that it must be somewhere around 30 (since 2*15=30), but how can I factor in the .4 of a second?

bobpursley · Answer

Isn't the area underneath the velocity plot distance? Velocity*time= distance?

I think this is what they are wanting you to do, measure the area underneath. An easy way to do that is to count the squares on the graph paper.

Lindsay · Answer

Great I got it, thanks. :)