1. The problem statement, all variables and given/known data I was just wondering in what instances you would use the two equation belows, and what the difference is between them. 2. Relevant equations average velocity: vave = Δx/Δt Uniform Acceleration: vave = (vi+ vf )/2 3. The attempt at a solution I'm assuming that the second equation is just a way of finding the average velocity of time and distance are not known.