I have problems with calculations involving projectiles, pliz help me and refer to the best wesites where I can get help? Thanks or send to <[email protected]>

where i can get help? thanx
You should learn to GOOGLE that yourself !
There is plenty of that sort of information.
Try this one :

Trajectories (http://hyperphysics.phy-astr.gsu.edu/Hbase/traj.html)

Success!
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