Our group decided to use 40 degrees as our launch angle. Since 45 degrees is the
theoretical perfect angle in a vacuum, we decided to pick an angle based on that. We didn't want an angle that was too high because of the gravitational pull, and we didn't want an angle that was too low because it wouldn't stay in the air very long and would just roll. So our team decided to use 40 degrees as our launch angle to avoid the wind resistance and still travel a far distance.
We used the formula: R=Vo^2sin2(o)/gravity constant to determine our angle.
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