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2-D Collision of Pucks -- Center of Mass Velocity
written by
Aaron Titus
This lab uses Tracker video analysis software to measure and analyze the center of mass of a system of two pucks during a two-dimensional collision. Students measure the initial and final velocity vector for each puck and calculate the center-of-mass velocity of the system before and after the collision and show that it is constant. Tracker can automatically calculate and mark the center of mass in each frame, so it is easy to see that the center of mass velocity is constant and calculate its value from graphs of center-of-mass variables.
The TRZ file contains the lab handout, a video showing a 2-D collision of pucks, and the Tracker data file. The video copyright is Flashmedia. The videos can be used with other video analysis software; however, the handout has screen captures from Tracker and instructions specifically written for Tracker. 
2 supplemental documents are available
Video Analysis of a 2-D Collision of Pucks -- Center of Mass VelocityThis lab handout guides students using Tracker to calculate the center of mass of a system of two pucks that undergo a two-dimensional colllision. download 182kb .pdf Last Modified: January 9, 2011 
Colliding Pucks VideoThe movie used in the Tracker experiment. download 39kb .mp4 Published: February 3, 2023
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Record Link
<a href="https://www.compadre.org/portal/items/detail.cfm?ID=10579">Titus, Aaron. "2-D Collision of Pucks -- Center of Mass Velocity."</a>
AIP Format
A. Titus, Computer Program 2-D COLLISION OF PUCKS -- CENTER OF MASS VELOCITY (2011), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10579&DocID=2072).
AJP/PRST-PER
A. Titus, Computer Program 2-D COLLISION OF PUCKS -- CENTER OF MASS VELOCITY (2011), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10579&DocID=2072>.
APA Format
Titus, A. (2011). 2-D Collision of Pucks -- Center of Mass Velocity [Computer software]. Retrieved April 20, 2024, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10579&DocID=2072
Chicago Format
Titus, Aaron. "2-D Collision of Pucks -- Center of Mass Velocity." https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10579&DocID=2072 (accessed 20 April 2024).
MLA Format
Titus, Aaron. 2-D Collision of Pucks -- Center of Mass Velocity. Computer software. 2011. 20 Apr. 2024 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10579&DocID=2072>.
BibTeX Export Format
@misc{
Author = "Aaron Titus",
Title = {2-D Collision of Pucks -- Center of Mass Velocity},
Month = {April},
Year = {2023}
}
Refer Export Format
%A Aaron Titus %T 2-D Collision of Pucks -- Center of Mass Velocity %D April 25, 2023 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10579&DocID=2072 %O application/pdf
EndNote Export Format
%0 Computer Program %A Titus, Aaron %D April 25, 2023 %T 2-D Collision of Pucks -- Center of Mass Velocity %8 April 25, 2023 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10579&DocID=2072 Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
Citation Source Information
The AIP Style presented is based on information from the AIP Style Manual. The APA Style presented is based on information from APA Style.org: Electronic References. The Chicago Style presented is based on information from Examples of Chicago-Style Documentation. The MLA Style presented is based on information from the MLA FAQ. This resource is stored in 3 shared folders. You must login to access shared folders. 2-D Collision of Pucks -- Center of Mass Velocity:
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