Construction of the "Mini Cannon"

1. We designed the cannon on a piece of paper, deciding what the best design could be to maximize pressure and launch the Nerf ball further.

2. We chose a double-barrel design and researched the best ratio (1:1.5) to use when building it.

3. We cut the plastic accordingly, and used the caps of both tennis ball cans as the middle barrier between the two chambers to build the pressure in the lower one when the reaction took place.

4. We used the remaining plastic to create the angle that it needed to be. We used a protractor to find exactly 38º and cut to create a ramp-like bottom.

5. We finalized the design using our remaining tape and name it the "Mini Cannon."