Instantaneous Speed Revisited
I’m not convinced you were all doing your best thinking yesterday. Reread the post and then read the last 5 comments what I wrote about them. How does that change the way you think about instantaneous speed (and momentum)?
May 2nd, 2007 at 8:32 am
I don’t think that speed can disappear and then reappear because something that’s moving can’t just stop and then start moving again. So I now don’t think that there is any such thing as instantaneous speed.
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May 2nd, 2007 at 8:32 am
you cant move then start up then stop then you cant move in a milasecond
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May 2nd, 2007 at 8:35 am
I think that there is a place for instantaneous speed in my world. Well I beleive that all speed is instantaneous. When you have speed the first second you start it is in an instant. I think that speed cant be anything but instantaneous so there for I do believe. You see, when speed starts no matter what it is moving the second so it is instantaneous. For example your sitting at your desk, You slip your bok over so you can look at you papers. The second you started to move the book it had speed in an instant. I think instant speed is speed.
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May 2nd, 2007 at 8:35 am
seen there is no speed then so that means you can teleport to any kind of speed at any time but you will have no momentum .
but that also means if there is instantanous speed then we could go in to the futere just like back to the futere the moive.
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May 2nd, 2007 at 8:36 am
There isn’t always instantaneous speed, because you can’t stop and then go again in less the a second. There isn’t any momentum, because when you don’t have any speed then you don’t have momentum.
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May 2nd, 2007 at 8:36 am
Well, I have no idea what I said yesterday, so I’m kinda wingin’ it. I think that if something were to start or stop suddenly, than momentum would be meaningless. If it started moving instantly, than the momentum would be sudden and remain the same; the object would not have to build up and maintain the momentum. If an object were to stop instantly, then the momentum would instantly be lost.
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May 2nd, 2007 at 8:37 am
I don’t think that there is instantaneous speed because you can’t stop abruptly and then start back up in one second. If no time has passed then there’s no momentum.
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May 2nd, 2007 at 8:37 am
you cant move then start up then stop then you cant move in a milasecond
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May 2nd, 2007 at 8:37 am
I have no clue about what i am supposed to write so im am just gonna wing it and totally guess on this one. I guess speed disappears every instant and reapper after a millisecond has passed, and i think momentum cant just disapper it has to be transferred, just like when a bat hits a ball the momentum it trasferred from the bat to the ball. and that is my way of thinking, it wont change.
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May 2nd, 2007 at 8:38 am
Speed is ditance divided by time. If this is true there is no such thing as instantaneous speed because you need the time of the objects movement and the distance. If you only have distance with a time that has no value than the object is simply not moving by forces known to mankind. If we had instantaneous speed than wouldn’t that mean it isn’t speed at all wouldn’t it just be instantaneous movement.
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May 2nd, 2007 at 8:39 am
I do not believe there is such thing as instantaneous speed. This is because you need distance and time to get speed. Nothing can go somewhere in a milosecond so there wouldn’t be any speed. This goes the same way for momentum. There may be mass but there is no speed so there wouldn’t be any momentum because you need both speed and mass to make momentum. If there was instantaneous speed I don’t see how that would be because there is no distance because the thing would stop right when getting ready to start.
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May 2nd, 2007 at 8:41 am
I think there is instananeous speed.
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May 2nd, 2007 at 8:42 am
Instintanious speed is not real there is know whay that a car can go stop and go again in a second because there would be no momentume.
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May 2nd, 2007 at 9:25 am
I think that there is instantaneous speed because if there is no time happening you will always have instantes happening even if there is not time passing. Like every second it will fall then it will stop and fall and it will repeat this pattern over and over while no time passes.
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May 2nd, 2007 at 9:29 am
“Speed is distance divided by time. If there is no time, then it would be distance divided by zero. Anything divided by zero is infinite, since zero goes into anything an infinite amount of times. Therefore, if there is no time, then the speed of an object is infinite.” Also, if the distance is zero, then it would be zero divided by zero. Zero still goes into zero an infinite amount of times. If there is an infinie amount of speed, then there is an infinite amount of momentum. This means that there is instantaneous speed; it just can’t be measured by us mere mortals. The speed is infinite, the mass is finite, the momentum is infinite.
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May 2nd, 2007 at 9:29 am
Well I think that if something were to start or stop suddenly than momentum would be meaningless. If it started moving instantly, than the momentum would be sudden and remain the same; the object would not have to build up and maintain the momentum. If an object were to stop instantly, then the momentum would instantly be lost.
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May 2nd, 2007 at 9:32 am
If you throw a ball and instantanouse speed happens and the objects momentum goes to 0. So if the momentum just stops then the ball will drop. I think there is instauntanoues speed.
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May 2nd, 2007 at 9:32 am
I think there is no speed when time passes so if there is no time we cant find momentum.
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May 2nd, 2007 at 9:34 am
I don’t think that there can’t be Instantaeous speed because momentum can’t just stop. So then speed can’t just stop and then begin over and over. An object can not stop even for a milisecond because it wouldn’t have momentum to move again.
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May 2nd, 2007 at 9:34 am
I don’t think their is instantainious speed because nothing can just go exactly at the time that you want it to, and then right when you say stop the speed goes away. I dont think it can stop right away but it can transfer into somthing else. Like if you run as fast as you can and then dive into a lake the momentum, goes into the water and makes waves. So you cant just stop the momentum or speed but you can put it into somthing else.
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May 2nd, 2007 at 9:35 am
I still dont think there is such thing as instaneous speed it might still have energy in it so that it will keep moving but if there is no momentum then it will stop moving and drop.
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May 2nd, 2007 at 9:39 am
I’m confused becuase if there is no time or distance there is no speed adn without speed there is no movement, so when there’s no movement then the object or w/e it is can’t move forever!
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May 2nd, 2007 at 9:39 am
I think that there is instananeous speed but it is extreamly hard to prove it as right or worng because it is hard get a object moving within a second and stop with in a second.
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May 2nd, 2007 at 9:39 am
No object can stop on a dime. If your driving a car at 60 mph, you can’t just stop on a dime. You need a few seconds to allow your cars momentum to slow down and eventually stop. I really don’t know much about this stuff.
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