From: smithm@SPAMBLOCKnetapps.com.au.retro.com   
      
   On 18 Jul 2004 09:57:45 -0700   
   cooludit19@gmail.com (udit) wrote:   
      
   > i have another question   
   > suppose a hot air ballon is made still in mid air.   
   > then the earth will rotate under it   
   > so will the baloon reach from one one place to another standing at one >   
   place? answer required.   
      
   Your balloon floats in the atmosphere, which mostly rotates with the Earth.   
   Air at very high altitudes can move at quite high speeds relative to the   
   Earth, but nowhere as fast as the planet's rotation.   
      
   If you fire a rocket to a very high altitude (10's of thousands of kilometres)   
   then the Earth will rotate under it because while it has the same horizontal   
   velocity it had at ground level, it has a much greater distance to go for a   
   single rotation, but    
   this is a very inefficent way to get from point to point on the Earth.   
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   Michael Smith   
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