1. The elimination of air friction is useful for flywheel energy storage and ultracentrifuges. 2. :: Air friction would also affect their handling characteristics. 3. However the drag / air friction is greater. 4. Good thing he didn't say " ignore air friction ", or you'd look a little silly. 5. After a few minutes, the top falls when air friction slows it below the critical speed. 6. Except for gravity and drag from air friction , momentum is conserved in any interaction of objects. 7. Reducing the air friction has many benefits. 8. This acceleration is the same for heavy objects as for light ones, provided air friction ( air resistance ) is discounted. 9. The two characters'on-air friction is caused not only by the differences in their journalistic credentials, but also their status at the TV station. 10. The Columbia was protected by thousands of tiles to shield it from the intense heat that builds up from air friction during re-entry.
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