We are working on a project involving the use of a pneumatic cylinder to propel an object. We have a mass 700 grams which we need to propel (through the air) a certain distance "D", where D will be a minimum of 5 meters and a max of 12 meters. We need help with formulas needed to determine the force needed to accelerate the mass to travel the distance. The object needs to travel in a linear fashion over the distance "D" before gravity pulls the object back to the floor. The object can projected with an initial vector angle of 20 to 45 degrees to achieve the travel distance D. The object may not exceed 1.75 meters off the ground. We need to make certain this can be achieved with a pneumatic cylinder which can operate at psi below 200. Anyone with some thoughts?