Hypothesis
A shorter barrel (volume) and a higher environmental temperature magnify the pressure exerted from the ethanol combustion resulting in the Nerf ball being fired a greater distance.
Materials
2 tennis ball cans with tops
12 inch strip of tape
1 pair of scissors
Canon construction design choice
The canon design was very simple, it consisted of a partially cut tennis ball can as the barrel. To achieve our desired angle we made the other can into the base by cutting it down and using a protractor to see if he got the right angle.
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