Solve the all parts of following question:
Question: A rock is launched from a catapult on a castle wall 12m above the moat. It is launched at 25 m/s at an angle of 30 degrees above the horizontal.
Part A: Draw a pictorial diagram with the variables used?
Part B: How far from the castle wall did the rock land?
I want to know how to work this out step by step, not just the answer please.