Part B Now let’s see if your prediction agrees with the experimental results. There isn’t any data at y = -3.5 m, so you’ll need to interpolate by zooming in on the relationship between y velocity (vy) and y displacement. You’ll use Tracker’s Data tool to help with this analysis. Follow these steps:

Change the vy versus t graph to a vy versus y graph. (Click the t label on the horizontal axis and select y: position y-component from the menu.)
It’s a little hard to see what’s going on with this graph at y = -3.5, so zoom in. Double-click on the graph to open it up in the Data tool.
Put your cursor on the point where the graph line intersects y = -3.5. Click and hold to read the vy at that point (shown in a yellow box).
What’s the interpolated graph value of vy at y = -3.5? Comment on how well this value agrees with the value of vy that you calculated in part A of this activity. Make a hypothesis about any notable difference.