О силе сопротивления воздуха

brusspup t-shirts! Add me on Facebook (click the like button to add me on facebook) This is a pretty old trick but still very impressive. If you take a wooden ruler and lay it on the edge of a table and try to break it by bringing a force down on it, the ruler will just fly off of the table. But when you lay a piece of paper on top of the ruler then the surface area that the air is resting on is mu