In class today...9/24/09

Erica accidentally posted this to the other class:

In class today, for our lab we measured the velocity of Ryan and Kyle while they were running. We placed different members of our class at different positions for 26 meters. When Kyle and Ryan passed a person, that person would record the time that it took for Ryan and Kyle to reach them. Kyle and Ryan ran in both the positive and negative direction. Once we collected all of the data we were able to make a position vs. time graph for both Ryan and Kyle. Once we graphed the position vs. time graph for each runner we created a best fit line and calculated the average velocity for Ryan and Kyle. We calculated two average velocities, one when they were running in the negative direction and one when they were running in the position direction. Because we were on a hill, the negative direction was downhill, and the positive direction was uphill.