Visit the following link for a discussion of projectile motion.
http://www.physicsclassroom.com/Class/vectors/U3L2f.html

Visit the following link for solutions to projectile problems. 
http://hyperphysics.phy-astr.gsu.edu/hbase/traj.html#tracon

Visit the following link for a simulation of projectile motion.  Your browser will need to be able to run Java applets.
http://www.walter-fendt.de/ph11e/projectile.htm