in physics lab m2 of physics 151, part v-3, why is there a smaller uncertainty in the steel ball? why would a

in physics lab m2 of physics 151, part v-3, why is there a smaller uncertainty in the steel ball? why would a

steel ball and a nylon ball have the same falling time for the most part (because acceleration is independent of mass) but that the nylon ball has more uncertainty when there are more trials. The steel ball would be very consistent with many trials, while the nylon ball would be different slightly every time. (does it have to do with air resistance?)