Up the river without a treadmill

[Moneypitt]

Ground/river bank speed=50
River/water speed = 70
Speed is relative to surroundings, ground speed, air speed, water speed. Air speed, even 1000 MPH at altitude, is a none event as there is nothing to relate the speed to, ground sped, you can see the ground coming at you, (or leaving if you're facing to the rear), and the same applies to water speed, but now the water is coming towards you, not stationary, so it seems like you have an 80 MPH jetboat, but the river bank speed (relative) feels like 60MPH. This explains why most jetboats on ebay say they will go 80. Its all relative to the surroundings.........MP
Yes, the MFer will FLY

[deltaAce]

Good point , thanks Moneypitt,
Speed measured with GPS
An Everglade Airboat with a full throttle speed of 50mph on a calm lake, is now traveling up a river against a 20mph current. How fast is the airboat going up river at full throttle?

[Moneypitt]

Good point , thanks Moneypitt,
Speed measured with GPS
An Everglade Airboat with a full throttle speed of 50mph on a calm lake, is now traveling up a river against a 20mph current. How fast is the airboat going up river at full throttle?
Now I've got to go find the drag co efficient of "a", (which I assume means any) airboat........Based on a totally flat bottom it would seem that those airboats run pretty dry once up to speed, so the opposing current would have little or no effect on the speed, no rudder in the water to drag it down, (oh, is there any wind on the river that wasn't on the lake?) I'm betting it would be within 2% of the same speed. (unless there is a hidden conveyer, or a flat tire somewhere in this question)......What do I win?.................MP

[deltaAce]

What do I win?.................MP
A first class seat on an airplane that takes off from a treadmill, sitting next to Snoopy Dogg Man, after he's been cleared of weapons of course!

[beaverretriever]

McRib>Airboat

[deltaAce]

If one guy ate a McRib and another guy ate a Chalupa, who would "drop the kids off at the pool" first?
Does one have hydralic assist?

[deltaAce]

should go slow then, save fuel and it would be better for the enviroment!..what'd I win Monty??
You've Won,
A brand new Yugo, this is the automobile of choice for environmentalists & MPG conscious consumers. Also a favorite of those who would love to give OPEC a big one finger salute! Owners of these cars have reported over 200 trips to the corner liquor store on just one tank of gas! That's right, a whole week on one tank!
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