1. The problem statement, all variables and given/known data A useful kinematic equation is (vf)^2 = (vi)^2 + 2ad You drop a ball (with zero initial velocity) from the top of a building to measure the acceleration due to gravity. If you measure the final velocity to be vf ± ∆vf, and the height of the building to be d ± ∆d, what is the relative uncertainty in your determination of the acceleration? 2. Relevant equations Uncertainties equations, propagation of error. 3. The attempt at a solution This time I'm really not sure. Should I first rearrange the equation to solve for acceleration, and then do my propagation of error? Or do I take it as it is right now?