According to Boyle's Gas Law, as volume decreases pressure increases. In accordance with this law, we sought to minimize the volume of our cannon while providing an area for the gas to build up. By making the bottom chamber small with a funnel at the top we planned for the gas to build up while making its way through the funnel. The funnel, blocked by the tennis ball, would trap and contain the gas, until eventually the ball would shoot off.
P1 x V1 = P2 x V2
As Pressure ^ Volume v
As Pressure v Volume ^
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