We have seen how projectiles move.  Remember that you often will have to do two problems for an answer because to find horizontal information, you use one equation, and to get vertical information you use another.  The equations are summarized below...
 
TO FIND Vx and Vy when objects are shot NOT along X or Y axes
Vy = shot velocity*sinq                                                        Vx = shot velocity*cosq
q is measured in degrees counterclockwise from the X axis
UNIFORMLY ACCELERATED MOTION  replace "a" with "g" for falling or projected objects
DX = (Vo+Vf)/2
Vf = Vo + at = Vf = Vo + gt
DX = Vot + at²/2 = DX = Vot + gt²/2
Vf² = Vo² + 2aDX = Vf² = Vo² + 2gDX

NOTE: Sometimes, you may see " Voy " instead of  " Vo ".  This is just to remind you that you are considering the Y dimension with that equation.
So don't be alarmed if you see: Vfy = Voy + at
Login to Lecture OnLine and solve these: Shoot 1, Shoot 2