your open hand is hitting more air so you feel it more, but if your changing the velocity is the increase in air resistance because its hitting more air or because its hitting the same amount of air with a greater velocity (I'm half thinking about ideas of relative velocity and momentum and...
I'm doing a data handling course work project. I've calculated various values for resistance and found that resistance increases as the speed of the body increases. I know that as the body is rolling very little of the force is friction, so most of it will be air resistance. i have an idea...