Kinematics, given only "vi" "vf" and "d" 1. The problem statement, all variables and given/known data I have a hunch this problem is impossible with the given information. Using the given information, solve for a and t. vi = 7.185m/s vf = -7.185m/s a = ? d = 0m t = ? 2. Relevant equations Not sure, I think this would be correct. vf^2 = vi^2 + 2ad (The problem here is obvious when d = 0) d = 1/2(vi+vf)t (Once again, as far as I can tell, useless when d = 0) 3. The attempt at a solution Well I can plug and chug the numbers the same as anyone, the problem is that it will always come out to zero. Thanks in advance guys.