1. The problem statement, all variables and given/known data Is this equation any good for finding a x=1/2 at2+v0t +x0 Given that v0t=0 and x0=0 I am trying to find the acceleration give that I dropped an eye dropper at 20cm and the average time was 0.116sec 2. Relevant equations I have isolated it to a, where it is A= 2x over t2 3. The attempt at a solution I have calculated it to be 2972cm/s2, then i divided it by 100 to get 29.72m/s2. Isnt the standard 9.8m/s2. I have also timed other objects and it seems they are all different.