#485536 - 02/05/09 07:03 PM
Re: Physics anyone????
[Re: Dan S.]
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River Nutrients
Registered: 03/07/00
Posts: 2955
Loc: Lynnwood, WA
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If the object at rest is now accelerating at 2 meters per second squared for 6 seconds... wouldn't that be 2, 4, 16, 32, 64, 128? If so... then 128 mps would be the constant velocity. 10 seconds in it would still be travelling at 128mps. At 14 seconds it would have been travelling at 128 mps for 8 seconds = 1024 meters + 2+4+16+32+64+128 for a total of 1270 meters? And to quote you Dan... "or not"! It's the 2 meters (squared) part the way it's written that's throwin' me.
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#485539 - 02/05/09 07:09 PM
Re: Physics anyone????
[Re: 4Salt]
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River Nutrients
Registered: 02/14/06
Posts: 2533
Loc: Elma
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It is 2 (m/s^2) Acceleration is distance over time squared.
Velocity = 0 + 2 (m/s^2) x 6 (s) = 12 m/s. Check my work please.
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WDFW - Turning outdoorsmen into golfers since 1994.
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#485543 - 02/05/09 07:16 PM
Re: Physics anyone????
[Re: Rocket Red]
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River Nutrients
Registered: 03/07/00
Posts: 2955
Loc: Lynnwood, WA
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So 12 meters per second is the constant velocity?
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A day late and a dollar short...
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#485548 - 02/05/09 07:21 PM
Re: Physics anyone????
[Re: Rocket Red]
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Repeat Spawner
Registered: 01/01/06
Posts: 1309
Loc: Poulsbo
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It is 2 (m/s^2) Acceleration is distance over time squared.
Velocity = 0 + 2 (m/s^2) x 6 (s) = 12 m/s. Check my work please. Somehow thats what she came up with. And + 1 for whoever said a smarter husband. I am curently willing to give up the position. You take over the GET payments, House payments, car payments. (J/K)
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#485551 - 02/05/09 07:23 PM
Re: Physics anyone????
[Re: 4Salt]
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River Nutrients
Registered: 02/14/06
Posts: 2533
Loc: Elma
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Yes, but I feel like I am being used by the cool kids.
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WDFW - Turning outdoorsmen into golfers since 1994.
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#485561 - 02/05/09 07:41 PM
Re: Physics anyone????
[Re: Dan S.]
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River Nutrients
Registered: 02/14/06
Posts: 2533
Loc: Elma
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I sure as hell didn't see any cool kids around here. Wait, seriously? Who could be cooler than people hanging around answering physics questions on a fishing bulletin board? Oh, thats right, like pretty much everyone.
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WDFW - Turning outdoorsmen into golfers since 1994.
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#485635 - 02/06/09 01:33 AM
Re: Physics anyone????
[Re: Rocket Red]
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I love me
Registered: 08/22/06
Posts: 1821
Loc: Around the way
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I knew that answer on acid once but I forgot it in the morning
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#485674 - 02/06/09 10:13 AM
Re: Physics anyone????
[Re: ]
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MPD
Registered: 01/02/08
Posts: 2544
Loc: Santa Rosa, CA
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So here is my question for the physics thread. Why are the things in science fiction eventually developed? Are sci-fi writers psychic or do they create a tangible goal?
Wow. Someone wrote about fishing with pink worms!?! That is sci-fi right there. Your question reminds me of a blurb I saw yesterday. In 1868 Jules Verne wrote 20,000 Leagues Under the Sea and created the unimaginable - an atomic powered submarine. The US Navy honored him by naming the first actual nuclear powered sub the "Nautilus". I don't think Verne included any schematics though...
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#485695 - 02/06/09 12:01 PM
Re: Physics anyone????
[Re: Mikespike]
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River Nutrients
Registered: 03/08/99
Posts: 6732
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"Why are the things in science fiction eventually developed? Are sci-fi writers psychic or do they create a tangible goal?"
Sci-fi writers are time travelers from the future....or aliens.
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#485709 - 02/06/09 12:21 PM
Re: Physics anyone????
[Re: stlhead]
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MPD
Registered: 01/02/08
Posts: 2544
Loc: Santa Rosa, CA
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"Why are the things in science fiction eventually developed? Are sci-fi writers psychic or do they create a tangible goal?"
Sci-fi writers are time travelers from the future....or aliens. I just knew there'd be a Repo Man moment in here somewhere, dealing with physics and such... http://www.youtube.com/watch?v=X4QKiYar9pI
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Don't believe everything that you think.
"Holy hell son, you're about as useful as a cock flavored lollipop."
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#485712 - 02/06/09 12:43 PM
Re: Physics anyone????
[Re: Mikespike]
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River Nutrients
Registered: 02/14/06
Posts: 2533
Loc: Elma
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My grandfather in law is a science fiction author. He sent me one of his books for Christmas. "Signed by the Author". I tried to read it, but gotdamn I just don't get it. It is something about rocket ships, atomic fluxes, neonparticle radiation, wookies, cyborgs, and secret micro chips.
I made it through two chapters, which is enough that when someone in the family asks me if I liked the book I can be like, "Oh, yeah that was interesting". But overall the book is so bad that I put it by the throne where reading is necessary, and I still won't pick it up.
So if Sci-fi writers are time travlers then the future looks really boring.
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#485794 - 02/06/09 05:40 PM
Re: Physics anyone????
[Re: Jason Y]
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sneaky I am not :)
Registered: 02/06/09
Posts: 48
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Classic integral calculus. The starting point to you question is given as acceleration. The integral of acceleration is velocity, and the integral of velocity is displacement. Conversely, if you were to go the other direction (differential calculus), velocity would be the derivative of displacement and acceleration would be the derivative of velocity. Simple Newtonian mechanics. In math language: Acceleration is constant = a Velocity = a(t)+vo Displacement = [a(t)^2] /2 + v(t) + do Plug in the numbers. You guys have already solved the velocity question correctly, but no one has given the right displacement answer yet. v(t) = 2 m/s (6 sec) + 0, (Plus zero because the object started from rest) = 12 m/s. The displacement has to be solved in two parts, because the object is undergoing acceleration for the first 6 seconds, and travels at constant velocity for the remaining 8 seconds. d1(v=0m/s,d=0m) = [2m/s^2(6 sec)^2] /2 + 0 m/s(6 sec) + 0 ft = 36 m d2(a=0m/s^2, v=12m/s, d=36m) = [0m/s^2(8 sec)^2] /2 + 12 m/s(8 sec) + 36 m = 132 m. An answer is only of value when accompanied by an explanation. Good day, gentlemen.
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#485796 - 02/06/09 05:46 PM
Re: Physics anyone????
[Re: Metalicious]
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River Nutrients
Registered: 02/14/06
Posts: 2533
Loc: Elma
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Welcome to the site Nerdalicious.
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#485798 - 02/06/09 05:48 PM
Re: Physics anyone????
[Re: Jerry Garcia]
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Spawner
Registered: 01/22/07
Posts: 746
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Saw Mat Damon move bout stuff like that.
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#485804 - 02/06/09 06:03 PM
Re: Physics anyone????
[Re: GreenRiver]
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Poon it! Poon it! Poon it!
Registered: 08/08/06
Posts: 1714
Loc: Yarrow Point
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Metalicious gets a gold star.
DanS gets an F
4Salt gets an F
Ripley gets an F-
---- Brian (B.S. in Physics, '89).
P.S. Still using Physics every day, especially the Gravity part.
Edited by IrishRogue (02/06/09 06:07 PM)
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#485807 - 02/06/09 06:08 PM
Re: Physics anyone????
[Re: Metalicious]
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MPD
Registered: 01/02/08
Posts: 2544
Loc: Santa Rosa, CA
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Classic integral calculus. The starting point to you question is given as acceleration. The integral of acceleration is velocity, and the integral of velocity is displacement. Conversely, if you were to go the other direction (differential calculus), velocity would be the derivative of displacement and acceleration would be the derivative of velocity. Simple Newtonian mechanics. In math language: Acceleration is constant = a Velocity = a(t)+vo Displacement = [a(t)^2] /2 + v(t) + do Plug in the numbers. You guys have already solved the velocity question correctly, but no one has given the right displacement answer yet. v(t) = 2 m/s (6 sec) + 0, (Plus zero because the object started from rest) = 12 m/s. The displacement has to be solved in two parts, because the object is undergoing acceleration for the first 6 seconds, and travels at constant velocity for the remaining 8 seconds. d1(v=0m/s,d=0m) = [2m/s^2(6 sec)^2] /2 + 0 m/s(6 sec) + 0 ft = 36 m d2(a=0m/s^2, v=12m/s, d=36m) = [0m/s^2(8 sec)^2] /2 + 12 m/s(8 sec) + 36 m = 132 m. An answer is only of value when accompanied by an explanation. Good day, gentlemen. Welcome to the board! Enjoy http://www.youtube.com/watch?v=Hrm-rPSCIBw
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Don't believe everything that you think.
"Holy hell son, you're about as useful as a cock flavored lollipop."
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#485835 - 02/06/09 07:52 PM
Re: Physics anyone????
[Re: Mikespike]
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River Nutrients
Registered: 03/07/00
Posts: 2955
Loc: Lynnwood, WA
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I'll gladly take that F IR. It's been a long time since I studied physics. When the question said "accelerates at 2m/s (squared) I was thinking in exponential terms? Kinda like when you jump out of an airplane and gravity accelerates you at 32 feet per second, per second until you reach terminal velocity. I was always more of a theoretical physics guy anyway...
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#485839 - 02/06/09 08:02 PM
Re: Physics anyone????
[Re: 4Salt]
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Three Time Spawner
Registered: 03/08/99
Posts: 1817
Loc: Wenatchee, WA
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Jezus....made me sweat just looking at that problem. I did two tours of duty at the UW and dropped physics both times...changed majors after that. I need another Pendleton.......
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