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Old 6th August 2018 | 17:14
  #245 (permalink)  
Jet_Fan
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Joined: Sep 2015
Posts: 86
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From: London
Originally Posted by Wizofoz
Thats the point-neither.

so do you not HAVE a groundspeed?
The groundspeed is still there, it didn't go anywhere. A chopper can have a - groundspeed and a + airspeed at the same time, while a ball just has groundspeed.
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