If the GPS says 85mph, how fast am I going?
 

If I'm on my boat, on the river going down-stream with a 4mph current, how fast am I going if the GPS says 85mph? :D :D :D :D

Re: If the GPS says 85mph, how fast am I going?
 

Let's hear it for a group. Duh!!!!!!!!!

Re: If the GPS says 85mph, how fast am I going?
 

duh

Re: If the GPS says 85mph, how fast am I going?
 

Depends if you are going east,west, north or south. Remember, the earth rotates and that needs to be figured in.

Re: If the GPS says 85mph, how fast am I going?
 

28 mph

Re: If the GPS says 85mph, how fast am I going?
 

You aren't seriously looking for an answer are you?????? :rolleyes:

Re: If the GPS says 85mph, how fast am I going?
 

Turn around and go up stream against the current, see what the GPS says .

Re: If the GPS says 85mph, how fast am I going?
 

The GPS measures speed over ground.You're going fast.About 85 mph either direction.

Re: If the GPS says 85mph, how fast am I going?
 

Well Reggie won most of world speed records with one of those gps units your talking about, it said 161 mph but the jet ski passing him said 54 so I CANT FIGURE :drink:

Re: If the GPS says 85mph, how fast am I going?
 

84.9999999999 :rolleyes: