In my university one of the big projects is to design a device that will fire a golf ball onto the green to help study turf damage. So far we have determined the following regarding it: It will be powered by some form of compressed air. It will not launch into the air, it will only fire into the ground. Spin must be simulated. Now, to get the spin on the ball we decided we could fire the ball through a cylinder, with more air pressure being concentrated on one part of the ball, generating spin. Now we are trying to figure out what kind of air supply would be adequate to launch the golf ball. We determined that the kinetic energy of a paintball at 300fps is essentially the same as a golf ball at 20m/s. So, does this mean we could use a similar pressure to launch the golf ball as a paintball? What we want to do is adapt a compressed air tank designed for paintball to do this but we are unsure if it is capable of meeting our demands. Would this type of tank be appropiate? And would the ball acquire a spin like we predicted?