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Physics EE help (Effect of wheels on the recoil momentum of a potato cannon)

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Hey guys this is my first time using IB Survival and I found out that it is really beneficial for the IB student. My Physics EE revolves around the effect wheels have on the recoil momentum of a potato cannon. RQ: To what extent does the rolling friction of wheels affect the recoil momentum of a potato cannon after launch?  

I just want your opinion on my research question and my topic, and if you believe it can be improved please let me know. :) 

As for the experiment itself, I am planning on building a potato cannon (with and without wheels) and comparing these three things after the launch of the potato: the location of the cannon, the speed of the potato, and the distance the potato traveled. 

Please let me know if there is a problem with my approach and how it can be improved, it would mean the world to me. 

Thank you :D

 

 

 

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