How could I measure the speed of a kayak through the water
https://www.quora.com/How-could-I-measure-the-speed-of-a-kayak-through-the-water-without-adding-drag
Answer (1 of 4): You seem to want the water-speed, not the ground speed. That is, the speed of the kayak, relative to the water it is placed in. Ground speed, as measured by GPS, is the distance on the surface of the Earth you are covering. The only way to measure water-speed is to measure the f... login
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