Instantaneous Speed?!?
Speed is distance divided by time. If no time passes, an object doesn’t move any distance. Doesw that mean that there is no such thing as instantaneous speed? If not, does the speed disappear every instant and reappear after a millisecond has passed? What happens to the momentum?
May 1st, 2007 at 8:30 am
There is always instantaneous speed so no it doesn’t mean that there isnt’t such a thing as instantaneous speed. If the speed disappear and reappeared constantly the momentum would be a constant up – down thing.
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May 1st, 2007 at 8:33 am
No it doesn’t mean there is no such thing as instantaneous speed because we’re still moving compared to the sun. The speed does not disappear because speed is always going it never stops for even a milisecond. The momentum does stop though because if we’re not runnning there’s no momentum so the momentum does stop but the speed and motion does not.
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May 1st, 2007 at 8:33 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 therefor I do believe.
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May 1st, 2007 at 8:37 am
There is always Instantaneous speed, but it is constantly disappearing and reappearing. The momentum goes back to zero every time it disappears.
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May 1st, 2007 at 8:39 am
I don’t think that there is instantaneous speed. I think that it is impossible for something to start moving in and instant and then stop. Inertia would slow it down. There would probably be momentum but it would go away when the spped went away (that is only if there was instantaneous speed which I don’t think there is). Maybe in the future someone will discover that there is instantaneous speed but from what I know right now, there is no such thing as instantaneous speed.
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May 1st, 2007 at 8:40 am
There is such thing as instantaneous speed, but it is always disappearing and reappearing.
It goes back to zero everytime it disappears.
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May 1st, 2007 at 8:42 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.
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May 1st, 2007 at 8:43 am
If we had maxtirx moves then we could go from zero to six in like a sec. there is such a thing called instantaneous speed because we do not all about this so that makes a new peice of secncie. it is all like it is every ther it can travel into the furtie. the momentum would never would go away.
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May 1st, 2007 at 9:28 am
I don’t think that there is always instaneous speed because you can not move and then start back up again in less then a second. Also the momentum stops. When you don’t have speed you no longer have momentum.
I agree with everything you say from the word because on. However, since you cannot move and then start back up again in less than a second (without some force causing the change), and since the momentum stops if the speed stops, and that if speed stops momentum stops (the three things you said) it seems to me that the speed would have to remain the same at the “instant”. Did you mean to write, “I think that there is instantaneous speed” in your first few words? Mr. Light
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May 1st, 2007 at 9:30 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. It cannot be measured by mortal means. Get over it.
But if time is zero, distance is zero. And zero divided by anything is zero. So what’s zero divided by zero? Zero? Infinite? Can speed go from 100 km/hr one millisecond to zero (or infinity) the next instant? What force could cause this to happen? And if it did, what would make it go back to 100 km/hr the next millisecond. And please, never get over thinking and wondering! Mr. Light
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May 1st, 2007 at 9:30 am
Their is always instantanious speed it just goes away and comes back over and over again.
If there “is always instantaneous speed” then why does it need to “go away and come back over and over again”? Mr. Light
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May 1st, 2007 at 9:31 am
I think there is instantaneous speed, it is always disappearing and reappearing. When it disappears it goes back to zero.
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May 1st, 2007 at 9:32 am
I would say that there is a such thing as instantaneous speed, but it is continuisly dissapearing and reapearing. So it will keep on going back to zero.
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May 1st, 2007 at 9:32 am
I think that you need to have time bassed on what Mr.Light says if no time passes then I think that the ball will just drop.
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May 1st, 2007 at 9:33 am
I think speed disippeard every instant and reapears so fast that if you were to tape record it and to slow it down it would look like it dident move a bit to the human eye but probly did.
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May 1st, 2007 at 9:33 am
I don’t think there is instantaneous speed. No the speed wouldn’t dissapear and reappear because spped dosent all of a sudden stop and then start going. The momentum would be gone so then whatever was moving in the air would be totally dropped.
This is a good point, Heather!! I’m not sure why other writers didn’t think of it! Mr. Light
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May 1st, 2007 at 9:33 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 1st, 2007 at 9:34 am
So there is always instantaneous speed. The istant. speed is always disappearing and reappearing. Every time that it disappears it goes to 0.
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May 1st, 2007 at 9:34 am
there is such a thing called instantaneous speed because liek it is the type of speed taht will go away and then come back! i think i is sort of like action adn reaction like you have action and then all of a sudden it can react!
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May 1st, 2007 at 9:34 am
If there is no time, there is no speed. If you were to watch a carcrash on film and then stop it, everything stops. If there is no speed, then there would also mean there is no momentum. But, if something stops it will need and outside force to make it move again, and if it is in motion, it will need someting to stop it. So, does time stop momentum? If there is no speed, then something is at reast, so then there would be no momentum. So speed relys on time, and momentum relys on speed and outside forces.
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May 1st, 2007 at 9:35 am
There is such a thing as instaneous speed but for ever time that the object does lose it’s momentum it goes to 0 and then it reapers.
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May 1st, 2007 at 9:35 am
Speed is distance divided by time. If so and there is no time because it instaunt. speed so it would be distance divided by 0. 0 goes into anything an infinite amount of time so if there is no time then it cant be measured.
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May 1st, 2007 at 9:35 am
i think speed disapears and that momentum cant just disapear it has to be trasfered
But momentum is speed times mass. If speed disappears, what happens to momentum? And you are right, momentum can’t just disappear, so . . . Mr. Light
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May 1st, 2007 at 9:36 am
If no time passes then the object would not go any where cause there is distent in time so without time there is no distent.
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May 1st, 2007 at 9:36 am
Speed, is not momentum so you it doesn’t conserve. Speed does require some energy and energy never just dissappears, it changes. When you see something stop dead in an instant it doesn’t mean that speed just disspears, the potential for speed has just overtaken.
Also, if something stops suddenly Newtons Third Law says that the opposite has to happen to something else, so if a bird stops in mid-air, the air current will change being either halted or pushed forward from the momentum that the bird has transferred.
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May 1st, 2007 at 9:36 am
I think that there can be speed in a milliscond and then disaper. If no time passes there can’t be speed. When the momentum is lost the speed is lost too. I don’t think that each milisecond it disaperes and reaperes.
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May 2nd, 2007 at 8:34 am
I believe that instantaneous speed isn’t a such thing, if instantaneous speed means that the speed dissappears for a millisecond then reappears, because an object must obtain speed and momentum, if it looses its speed then the object will have a force acting against it, according to Newtons third law which would stop it, which on a graph the line would not at all be steady.
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May 2nd, 2007 at 9:31 am
I think speed disippeard every instant and reapears so fast that if you were to tape record it and to slow it down it would look like it dident move a bit to the human eye but probly did
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May 2nd, 2007 at 9:32 am
I think speed disippeard every instant and reapears so fast that if you were to tape record it and to slow it down it would look like it dident move a bit to the human eye but probly did.
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May 2nd, 2007 at 9:34 am
O.k, so I still agree with the first blog that I wrote. That there is no instantaneous speed. However I think that the object still has energy, but it’s not speed. Without time there is no speed. Because to find speed to take distance divided by time. So without time there is no speed. The energy that’s in the ball is still there, it’s just not speed.
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May 2nd, 2007 at 9:35 am
when time stops, speed stops. Momentum continues though. Speed is determined by time, so speed cannot be faster then time. That means the speed would keep going, but slower then an instant. Also energy cannot be destroyed. It transfers between one object to another.
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May 2nd, 2007 at 9:36 am
I am going to change what I said before. I do not think that there is no such thing as instantaneous speed. Also there is no momentium if there is no instantaneous speed. The speed disapperars and reappears then.
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May 2nd, 2007 at 9:38 am
Sort of like what I was trying to say yesterday, energy and mass, and momentum and speed has to be changed. It doesn’t dissappear, it converts. Momentum doesn’t just stop and because the momentum can’t dissapear, then speed is transferred to something else.
I think that there is something like instantaneous speed because I think that speed doesn’t just die.
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