When did democritus propose the idea of atoms?

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on

Passive transport of the bag, quavo once said "you get the bag and fumble it, i get the bag, flip it, and tumble it". but the answer could either be quavo, offset, or, takeoff.