I have this question from my book I really don't understand what they are asking for; A spring loaded gun is aimed horizontally and is used to launch two kind of weight of balls with different initial speeds and gravitational accelerations. The Gun is fixed position above the floor. The balls are fired one at a time. How the horizontal range affected for each case? Note: M =2m, G=2g, and V=2v. Here is one of the questions: Conditions: Use a ball whose mass is m, with the initial velocity V, and under gravitiational acceleration g. Result: (e.g. The ball hit the ground at R from the gun as shown above.) Reasons: (From which formulas you can derive the answer?) Don't really understand what velocity since V = 2v????