Physics Problem :D

[Dr.Gusta]

Okay so my team is trying to keep our bot stupid simple to drive and control. What we decided is that the arm that controls our claw and shooter will be controlled by pneumatic's. This would give us two positions: Pick Up and Shoot. We want to shoot on the edge of the Red (or blue) division line. Then the ball would be put into firing position and shot. This is similar to The Holy Cows strategy last year but they used the pyramid as their aimer. Okay now to my question what angle will the arm have to be at if it is being shot by a surgical tubing punch that has 100lbs of pull back force when pulled all they way back. Sorry for the kind of lack of details but that is all the real information I have. Thanks for any help you can provide.