1. The problem statement, all variables and given/known data For a lab in Physics C, we're supposed to find the muzzle and impact velocity of a dart gun. We found x-distance, y-distance, and angle fired at, however, we were not allowed time. Our teacher wants us to graph data that is important, but I don't see how a graph would be able to show anything here... 2. Relevant equations The Kinematics equations. 3. The attempt at a solution I derived the equation for Initial Velocity to be ∆x/(√((2∆y-2∆x tan(θ))/g) cos(θ)). However, I'm at a loss as to what my graphs could possibly show.