Hi Chris,
I found some resources from NSTA that may be able to help! While they aren't specifically about data from a car crash, they still include activities about momentum. Please let me know if you think these will be helpful, or if you need anything else!
First, I found a book chapter about speed and assessment: http://common.nsta.org/resource/?id=10.2505/9781935155188.8
Then, I found a different book chapter asking about speed limits and if they should be lowered (the experiment here seems like it would be a lot of fun!): http://common.nsta.org/resource/default.aspx?id=10.2505%2f9781938946004.unit+3
Finally, I found an article that discusses momentum and force while using the Olympic sport of curling: http://common.nsta.org/resource/?id=10.2505/4/ss11_035_04_36
Let me know if you use any of these with students, and if so, how it goes!
-Megan
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