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Capt. Jon
MMT F.E.
Joined: Mon Jan 12, 2009 10:25 pm
Posts: 910
Location: In a trailer of common sense, looking out the window at a tornado of stupidity
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 Someone please explain this to me... You know how when you are running a boat through ice, little chunks of ice shoot out away from the boat and slide across the surrounding ice?
Well, how can the hull launch chunks of ice forward that are travelling faster than the boat?
Let's say that you are running a steady 20 mph through 1" ice. There will be broken chunks of ice spraying out from where the bow is breaking the sheet ice. Some of those chunks will go forward and slowly outpace the boat - travelling about 23 or 24 mph. Of course, these chunks will steadily slow and eventually be passed by the boat.
How can a solid object (the boat) travelling 20 mph propel another solid object (the ice) 23 mph?
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| Sun Jan 10, 2010 1:03 pm |
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WBG444
MMT Pro Member
Joined: Wed Sep 30, 2009 7:54 am
Posts: 112
Location: Mineola Texas!
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Re: Someone please explain this to me... Ok I’m going to butcher this…but I think it has to do with Newton’s third law “for every action there is an equal and opposite reaction” and the ice cubes have less friction den ur boat…ok I’m going to stop…I don’t know what I’m talking about =)
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16X60GD 27HP Surface Drive
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| Sun Jan 10, 2010 1:10 pm |
 
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WestEndAngler
MMT Moderator
Joined: Thu Mar 05, 2009 9:11 am
Posts: 9143
Location: Houston | Surfside
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Re: Someone please explain this to me... Its the difference between resistance of an object on water vs. ice there is less force required to propel an object across ice than water.
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GTB 1860 w/ 2019 GTR40XD-HO
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| Sun Jan 10, 2010 1:12 pm |
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Capt. Jon
MMT F.E.
Joined: Mon Jan 12, 2009 10:25 pm
Posts: 910
Location: In a trailer of common sense, looking out the window at a tornado of stupidity
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Re: Someone please explain this to me... I see what y'all are trying to get at and I understand that wet ice on wet ice has far less resistance than just about anything else. But how can an object travelling a constant 20 mph propel another object 23 mph?
Newton didn't say anything about an action having a greater reaction...
Trust me, I thought of the same things over the past 2 days - as this has consumed my mind.
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| Sun Jan 10, 2010 1:59 pm |
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brlcla
MMT F.E.
Joined: Tue Jan 13, 2009 5:11 pm
Posts: 955
Location: Lake Charles, LA
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Re: Someone please explain this to me... Its all mass and force...
Your motor applies a certain force against the water to push your boat forward... When your motor and the friction of the water against your boat equal you get constant velocity. It is all a fuction of the mass of the boat.
Take a smaller mass and impart the same force you get a higher acceleration due to the formula below... You catch up to the ice chunk do to friction. When the chunk breaks out and jumps accross the ice in front of you the force you apply to it no longer exist and the only force on the ice now is friction which slows it down and you catch up.
Force = mass x acceleration
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| Sun Jan 10, 2010 4:14 pm |
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THA
MMT Member
Joined: Wed Jan 14, 2009 9:50 am
Posts: 45
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Re: Someone please explain this to me... Think more in the terms of compression of the ice in front of the bow breakng and releasing
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| Sun Jan 10, 2010 4:21 pm |
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River
MMT 1000 Club
Joined: Wed Jan 14, 2009 8:34 am
Posts: 1092
Location: Unaffiliated, SETX group has caused me to renounce my Texas Citizenship
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Re: Someone please explain this to me...
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"Democracy is two wolves and a lamb voting on what to have for lunch.
Liberty is a well-armed lamb contesting the outcome of the vote."-Benjamin Franklin
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| Sun Jan 10, 2010 8:47 pm |
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Capt. Jon
MMT F.E.
Joined: Mon Jan 12, 2009 10:25 pm
Posts: 910
Location: In a trailer of common sense, looking out the window at a tornado of stupidity
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Re: Someone please explain this to me... Thanks y'all --
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| Sun Jan 10, 2010 9:11 pm |
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netman
MMT 1000 Club
Joined: Wed Jan 14, 2009 3:48 pm
Posts: 2363
Location: Chandler,Indiana
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Re: Someone please explain this to me... I'm glad you don;t get ice every year. I can only imagine what kind of questions you would come up with if you lived up here 
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I got a shotgun,rifle and a Go Devil Surface Drive a country boy can survive.
35+hp GDSD engine mods by George Merta
18x48 GDSD boat
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| Mon Jan 11, 2010 12:46 am |
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BROOKS
MMT 1000 Club
Joined: Tue Jan 13, 2009 9:46 pm
Posts: 4596
Location: East TEXAN Proud
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Re: Someone please explain this to me... You know Capt ~ I was just thankin' the same thang over this past week-end !!!! Dang purdy site we had over here in EastTexas fo sho !!! Mines niece took some video of our "Ice RooterTail" .... Much fun indeed !!! Randy ~ You rite .... we don't git to see lake/river ice very often .... only problem I had durin' this time was to git all 3 of mines PFD's on !!!! 
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Git a Gator-Tail or ride in mines wake ...... MtrFact !!!!!
'05 Model .... Still Number One on the Water !!!!
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| Mon Jan 11, 2010 9:54 am |
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Silvercreek
MMT Pro Member
Joined: Thu Jan 15, 2009 10:22 am
Posts: 343
Location: Flinthills of Eastern Kansas
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Re: Someone please explain this to me... Kinetic energy.
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"Trust Me! Buy the Gator Tail, not the farm"
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| Mon Jan 11, 2010 6:24 pm |
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Mudgun
MMT Addict
Joined: Wed Jan 14, 2009 12:24 pm
Posts: 746
Location: Here Be Rocks VA
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Re: Someone please explain this to me... I'll tell you why....
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1660 Rhino High-Side with center console
90/65 Mercury 2 stroke Outboard jet pump
Run shallow, run loud.
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| Mon Jan 11, 2010 7:43 pm |
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OwenDickeson
MMT Elite Member
Joined: Wed Mar 11, 2009 12:45 pm
Posts: 9869
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Re: Someone please explain this to me...
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| Mon Jan 11, 2010 7:48 pm |
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