1. The problem statement, all variables and given/known data Secretariat ran the Kentucky derby with time for the quarter mile of 25.2s, 24s, 23.8s, and 23s. Assuming that secretariat's instantaneous speed at the finish line was the same as the average speed during the final quarter mile, find his average acceleration for the entire race. 2. Relevant equations average velocity=distance/time acceleration=change in velocity/time 3. The attempt at a solution Got the first part of this problem right which was just what was his average speed during the first quarter mile in ft/s. That was just 1320ft/25.2. Now the way i read this part of the question was using his average velocity for the final quarter mile which would be 1320/23 = 57.3913ft/s find his average acceleration for the entire race which would then be 57.3913/average time for all 4 1/4mile runs. However the answer i get of 2.391m/s^2 is not the right answer. Can anyone tell me how I am reading this question wrong?