if 2 marbles are dropped from the same height, does friction have more than 1% effect on their motion?

Question

one of the mables is steel and the other is plastic

Answer 1

Depends on the height you drop them from. The wind resistance, or drag, is proportional to the velocity (or the square of the velocity at high speed). There will be a velocity at which it doesn't gain any more speed because of the drag. So that's way over 1%.

So if they're dropped from a low height, they probably don't gain much speed, therefore experience much drag.

Answer 2

Depends on the medium in which they are dropped and also the composition and size of the marbles. 1 small, hollow, plastic marble with very low mass dropped in water (instead of air) could easily have more than 1% friction effect. Even dropped in air it could (think of a balloon dropping -- not nearly as fast as steel).