Cannon Design

Materials:
Two tennis ball cans
18 inches of tape
Scissors

Procedure:

First we tried to put one can inside the other to make the cannon thicker so maybe it would be better pressurized and launch the ball further, but we decided not to because we might have ruined the cans in the process.

Then we decided to place the barrel of the cannon (one tennis ball can) on top of two cylindrical stands (the other can cut in two pieces) cut to fit the can. One cylindrical stand is 5 inches and the other is 2 inches making the angle of the barrel 45 degrees wich is the perfect angle of trajectory because it  allows distance and heigth to work together to achieve the furthest launch distance.