Question

identical drops of water falling down vertically in air with terminal velocity v.if they combine to form single bigger drop then what will its terminal velocity

Answer 1

I think ,the speed wether you through or falling under gravity?

Any object , irrespective of it's mass or volume falls on a constant rate of 32′per sec/per sec.progressively under gravity.

However,the heavy water ball of 27 drops being liquid with more volume , encounters the atmospheric resistance more than the waterdrops .

With it's higher buoyancy effect,it not only slows down but also drizzles and breas into tiny drops.

I don't find any reason behind the specific 27 drops,unless the size of the drop with it's initial velocity with the distance to be traveled is specified.

Thanks