1. The problem statement, all variables and given/known data Hi, I'm stuck on this problem (it seems simple but I can't seem to get it down), The question is, "A certain cannon with a fixed angle of projection has a range of 1500 m. What will be its range if you add more powder so that the initial speed of the cannonball is tripled?" 2. Relevant equations d=vhori*t d=vhori cos theta * t 3. The attempt at a solution At first I simply saw this as a distance versus velocity and time problem (x=v0x*t so I simply tripled the distance getting 4500; not surprisingly, I was wrong. I'm sure that the equation relies on the 'fixed angle' part of the equation so I simply divided the equation by 21/2 (due to cos theta) getting 3192, but I'm still wrong, what variable am I forgetting?