Can you solve these physics riddles? ft Simone Giertz - Part 1/3

at terminal velocity, there is no more acceleration. The forces wich applies on each ball are weight and friction. Because the motion is uniform, we can use the first Newton's law, so we know that vector weight + vector friction = 0, so weight = friction (in term of value). Because weight of the heavy ball > weight of the light ball, we know that the biggest friction force applies on the heavier ball. QED