Station8

=**Station 8: Lego Racer (Math Required - In the TTL)**= = =

Your group is tasked with trying to track the velocity of a Lego car down a ramp (two different ramp positions, actually), and look at how resistance affects velocity.
 * Introduction**


 * What you will need:**
 * A blue bin of Lego blocks, including four wheels (which are in the bin - DO NOT LOSE THESE!). Ask the TTL AI on duty to get you the bin, and return it with all of the pieces at the end of your activity DISASSEMBLED.
 * To assemble a "car" out of Lego blocks
 * The practice track: two boards positioned within the blue-tape marks propped up on the paper box lid as you found it (please make sure you return the track to the status you found it - or better)
 * The GoMotion sensor (taped to the box lid at the end of the track)
 * To open the GoMotion Logger Lite software on the attached computer (the shortcut to the program is on the desktop

>
 * What you need to do:**
 * First, watch the following video:
 * https://oncourse.iu.edu/access/content/group/FA09-BL-EDUC-W200-C11952/Data%20Collection%20and%20Analysis%20Video%20Files/legocar.mp4
 * Or, if that does not work... https://oncourse.iu.edu/access/content/group/FA09-BL-EDUC-W200-C11952/Data%20Collection%20and%20Analysis%20Video%20Files/legocar.flv
 * NOTE: these videos are in the W200 Oncourse site, in the "Data Collection and Analysis Video Files" Folder.
 * Take the Lego blocks bin, and design a car. Each car should roughly be based off of the following "base" model
 * Next, open the GoMotion Logger Lite software on the attached computer (make sure the GoMotion sensor is attached to the computer first)
 * After opening the software, make one change: In the "Experiment" menu, choose "Data Collection." In the dialog box that pops up, change the "length" to 15 seconds, then click "Done."
 * Take your car, and - by pushing and letting go - propel the car down the track from the "start" line to the "Finish" line by letting go.
 * Record using the Motion Sensor
 * You are to do this four times:
 * Ramp positioned low (less severe drop), and with less weight and/or resistance on your Lego car.
 * Ramp positioned low (less severe drop) and with more weight (more Legos) and/or more resistance (a sail, or a wall of Legos on your car.
 * Ramp positioned high (more severe drop), and with less weight and/or resistance on your Lego car.
 * Ramp positioned high (more severe drop) and with more weight (more Legos) and/or more resistance (a sail, or a wall of Legos on your car.


 * At the end of the station, you should have...**
 * A screenshot of your graph for each of the four experiments from above
 * A photograph of your Lego car (you only need the successful one, though you could include - and label - others if you wanted to
 * Describe the ramp and the car for each of your four experiments
 * Explain why these four experiments are different


 * When finished, post the items you have "at the end of the station" to your blog (making sure to label the blog entry with the station's name and number, and labeling all sections. Then, if this is your first station - go to the next station.**