In a perfect world, let's say you are planning to paddle a linear distance of six (6) miles at three (3) miles per hour against a one (1) mile per hour current how long should it take you if you don't stop? How long will it take if you take a five (5) minute rest break every fifteen (15) minutes (just stop paddling and let the current have its way)? Practical math or practically magic? -- Hal Wilton, NH Power your boat with carbohydrates, not hydrocarbons. http://www.jlc.net/~hlevin *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
On Thu, 26 Aug 1999, Hal Levine wrote: > In a perfect world, let's say you are planning to paddle a linear > distance of six (6) miles at three (3) miles per hour against a one (1) > mile per hour current how long should it take you if you don't stop? OK, speed nets out to 2 mi/hr... > How long will it take if you take a five (5) minute rest break every > fifteen (15) minutes (just stop paddling and let the current have its > way)? ...then speed averages to 1 mi/hr, as in 15' you go 1/3 mi in 10 min., minus 1/12 mi in the next 5 min. > Practical math or practically magic? Don't understand what the point is...(?) Elaine Harmon - eilidh_at_dc.seflin.org - eharmon_at_cs.miami.edu *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
> -----Original Message----- > From: Hal Levine [mailto:hlevin_at_jlc.net] > In a perfect world, let's say you are planning to paddle a linear > distance of six (6) miles at three (3) miles per hour > against a one (1) > mile per hour current how long should it take you if you don't stop? > How long will it take if you take a five (5) minute rest break every > fifteen (15) minutes (just stop paddling and let the current have its > way)? > Practical math or practically magic? > OK - Here's my shot at it... and I know that I'm possibly exposing my frightful mathematical skills to the world a) 3 hours - effective paddling speed calculated at 2 mph b) 14.42 hours - forward progress in 15 minutes .5 miles, drift in five minutes .084 miles , total forward progress in a 20 minute time period .416 miles. 6 miles divided by .416 = my guess. Don't know if my scratchin and figgurin is right or not, but it was an interesting question to start the day. Dave Seng - not a math whiz by any stretch of anyone's imagination! Juneau, Alaska *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
> > -----Original Message----- > > From: Hal Levine [mailto:hlevin_at_jlc.net] > > In a perfect world, let's say you are planning to paddle a linear > > distance of six (6) miles at three (3) miles per hour > > against a one (1) > > mile per hour current how long should it take you if you don't stop? > > How long will it take if you take a five (5) minute rest break every > > fifteen (15) minutes (just stop paddling and let the > current have its > > way)? > > Practical math or practically magic? > > > > > OK - Here's my shot at it... and I know that I'm possibly exposing my > frightful mathematical skills to the world > > a) 3 hours - effective paddling speed calculated at 2 mph > b) 14.42 hours - forward progress in 15 minutes .5 miles, > drift in five > minutes .084 miles > , total forward progress in a 20 minute time period .416 > miles. 6 miles > divided by .416 = my guess. > Don't know if my scratchin and figgurin is right or not, but it was an > interesting question to start the day. > > Dave Seng - not a math whiz by any stretch of anyone's imagination! > Juneau, Alaska OK, I'll correct myself - .416 miles in 20 minutes works out to a forward rate of 1.25 mph so the six miles will take 4.8 hours. Dave - who will now stop demonstrating his ignorance<g> *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
Hmmmm, Do I get a Gold Star if I get the right answer? I don't like math but I ciphered 3 hours if'n you don't stop and 5 hours if you do. Kinda surpised me but stopping every 15 minutes for 5 minute rest is expensive. Plus the "ground" you loose while sitting still for 20 minutes out of 60 just makes it worse. Do I get a can of pepper spray for a reward? Or the book on "How to Sh.t in the Woods?" Bungee cords? Later.... Dan McCarty *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
Hal Levine wrote: > > In a perfect world, let's say you are planning to paddle a linear > distance of six (6) miles at three (3) miles per hour against a one (1) > mile per hour current how long should it take you if you don't stop? > How long will it take if you take a five (5) minute rest break every > fifteen (15) minutes (just stop paddling and let the current have its > way)? ...and the answer is... 4 hours 45 minutes. I have not double checked this, but it seems obvious. BTW, it is easier if you do it in base 12, since the distances traveled per cycle are in 12ths of a mile. :-) (Dave Seng was on the right track, but his answer must be based on Alaskan hours, which apparently are only 20 minutes long. Dave also forgot to allow for the fact that in the last cycle of paddle-drift, you won't get to the drift stage since you will have arrived at your destination.) Dan Hagen Bellingham, Washington *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
On Thu, 26 Aug 1999 10:46:36 -0400 Hal Levine <hlevin_at_jlc.net> writes: >In a perfect world, let's say you are planning to paddle a linear >distance of six (6) miles at three (3) miles per hour against a one >(1) >mile per hour current how long should it take you if you don't stop? >How long will it take if you take a five (5) minute rest break every >fifteen (15) minutes (just stop paddling and let the current have its >way)? >Practical math or practically magic? > > Hal > Wilton, NH > Holy Cow Batman, Shades of Sixth period Science Stuff ... Hmmm, probably has something to do with distance = rate x time Let's see, if I go at 3 and current bangs at 1 then we all go at ......2 ? It could be worse Batman ....we could be doing metrics here !! Now, about those rest stops .....Hmmm, taking off 20 minutes of every 60 must reduce something ....Maybe I will only be .6667 of the man I use to be. Would that make something less of my unfeathered 3 here ? Yes, the current is still banging away. ....Help me, Batman, Help me ! I'm struggling !! Alright, dammit, why is the boat moving backwards while I'm catching my breath ? (Well if you get my DRIFT the 20 minutes I rest each hour for the ....what was it there ...a 6 ? ...allows this contrary ONE to leave me some 120 minutes away from where I want to be. Making that up makes everything come out relatively even making the correct answer to be ^%#$_at_4e. Oops, what a badd tim to havvve a serrrver problemmmxxxxxxxxxxxxxxxxxxxxx ERROR CODE 013 xxxx Hal, you're almost as much fun as Monday morning !! 8-) ....adieu ...Peyton (Louisiana) ___________________________________________________________________ Get the Internet just the way you want it. Free software, free e-mail, and free Internet access for a month! Try Juno Web: http://dl.www.juno.com/dynoget/tagj. *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
Hal Levine wrote: > > In a perfect world, let's say you are planning to paddle a linear > distance of six (6) miles at three (3) miles per hour against a one (1) > mile per hour current how long should it take you if you don't stop? > How long will it take if you take a five (5) minute rest break every > fifteen (15) minutes (just stop paddling and let the current have its > way)? > Practical math or practically magic? > I get 2 hours and 15 minutes. After 15 minutes you have paddled 0.5 (6/12) miles. You then drift back 0.083+ (1/12) miles leaving you at 0.415+ or 5/12 miles after 20 minutes. After 1 hour you are at 3 times this or 1.25 (1 1/4) miles. After 2 hours you are at 2.5 (2 1/2) miles. In the next 15 minutes you paddle 0.5 (1/2) and are there without having to drift back. John *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
Sorry John - you have only gone 3 miles - you need to have gone 6. You were on the right track though. I've lost track of all of the answers but I come up with 4 hours and 45 minutes. I'm assuming that once you stop paddling you immediately drift backwards at 1 mph. Must be using an unfeathered paddle? Now back to my pudding..... -----Original Message----- From: John Waddington [mailto:waddinj_at_recorder.ca] Sent: Thursday, August 26, 1999 4:54 PM To: paddlewise_at_lists.intelenet.net Subject: Re: [Paddlewise] You do the math....... Hal Levine wrote: > > In a perfect world, let's say you are planning to paddle a linear > distance of six (6) miles at three (3) miles per hour against a one (1) > mile per hour current how long should it take you if you don't stop? > How long will it take if you take a five (5) minute rest break every > fifteen (15) minutes (just stop paddling and let the current have its > way)? > Practical math or practically magic? > I get 2 hours and 15 minutes. After 15 minutes you have paddled 0.5 (6/12) miles. You then drift back 0.083+ (1/12) miles leaving you at 0.415+ or 5/12 miles after 20 minutes. After 1 hour you are at 3 times this or 1.25 (1 1/4) miles. After 2 hours you are at 2.5 (2 1/2) miles. In the next 15 minutes you paddle 0.5 (1/2) and are there without having to drift back. John *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ *************************************************************************** *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
Joe Brzoza wrote: > I've lost track of all of the answers but I come up with 4 hours and 45 > minutes. That's correct! (I posted the answer this morning, but it never made it to the list.) > I'm assuming that once you stop paddling you immediately drift > backwards at 1 mph. Must be using an unfeathered paddle? Nope! Your assumption is necessary for your answer, but you are wrong about this implying the use of an unfeathered paddle. :-) If you were using an unfeathered paddle you could set your paddle down on the deck with both blades slicing into the wind. With a feathered paddle, when you set your paddle on the deck in front of you at least one blade will be slowing you down. Dan Hagen *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
At 10:46 8/26/99 -0400, Hal Levine <hlevin_at_jlc.net> wrote: >In a perfect world, let's say you are planning to paddle a linear >distance of six (6) miles at three (3) miles per hour against a one (1) >mile per hour current how long should it take you if you don't stop? i'll bite, with a different answer, just to play the devil's advocate... you're paddling 3 miles per hour, 2 hours [i'm going to assume ;-) the boat is moving forward 3mph relative to the land, not the water under it!! >How long will it take if you take a five (5) minute rest break every >fifteen (15) minutes (just stop paddling and let the current have its >way)? >Practical math or practically magic? i get 3 hours & 50 minutes, with above assumption ;-) mark >-- > > Hal > Wilton, NH > > Power your boat with carbohydrates, > not hydrocarbons. > http://www.jlc.net/~hlevin > > >*************************************************************************** >PaddleWise Paddling Mailing List >Submissions: paddlewise_at_lists.intelenet.net >Subscriptions: paddlewise-request_at_lists.intelenet.net >Website: http://www.paddlewise.net/ >*************************************************************************** > > #------canoeist[at]netbox[dot]com-------------------------------------- mark zen o, o__ o_/| o_. po box 474 </ [\/ [\_| [\_\ ft. lupton, co 80621-0474 (`-/-------/----') (`----|-------\-') #~~~~~~~~~~~~~~~~~~~~~~~~~~~_at_~~~~~~~_at_~~~~~~~~~~~~~~~~~~~_at_~~~~~~~~_at_~~~~~ http://www.diac.com/~zen/paddler [index of Paddling websites I manage] Rocky Mtn Sea Kayak Club, Colorado River Flows, Poudre Paddlers The Colorado Paddlers' Resource, Rocky Mtn Canoe Club Trip Page -- Computers are useless. They can only give you answers. --Pablo Picasso *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
Sidney_Stone_at_amsinc.com wrote: > > ... > The answer to Question 2 is 4.8 hours (4 hours 48 minutes). Here's the > math: > > ...<snip>... > > 6 miles divided by 1.25 mph = 4.8 hours > Sidney, this last step is where you made your mistake--misapplying the 1.25 mph average. The average speed of 1.25 mph only applies to a full cycle of "paddle forward-drift back". On the last cycle you reach your destination prior to the "drift back" portion of the cycle (thus raising the average speed for the last portion of the journey). This can be seen as follows: After 4 hours at the average speed of 1.25 mph, you will have gone 5 miles, one mile short of your destination. At this point you will complete two additional paddle-forward-and-drift-back cycles, which will take 40 minutes and move you 10/12 mile, leaving you 2/12ths of a mile short. As you begin the last cycle you paddle forward at a net speed of 2 mph, and thus complete the final 2/12ths of a mile in 5 minutes (for a total time of 4 hours and 45 minutes). Since this last leg only takes 5 minutes of paddling, you arrive prior to the final "drift back" portion of the cycle. For the last 2/12ths of a mile you are averaging 2 mph, not 1.25 mph (as your calculation assumes). I hope that this clears things up. Dan Hagen *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
-----Original Message----- > From: Dan Hagen [mailto:dan_at_hagen.net] snip > (Dave Seng was on the right track, but his answer must be based on > Alaskan hours, which apparently are only 20 minutes long. Just trying to cram as many daylight hours in as possible before winter and the dark!!<g> It's Friday and the sun is shining bright above the fog on the water - a sure sign to take the afternoon off and go for a paddle. Dave Seng Juneau, Alaska *************************************************************************** PaddleWise Paddling Mailing List Submissions: paddlewise_at_lists.intelenet.net Subscriptions: paddlewise-request_at_lists.intelenet.net Website: http://www.paddlewise.net/ ***************************************************************************
This archive was generated by hypermail 2.4.0 : Thu Aug 21 2025 - 16:33:02 PDT