A question - A strange bird!

[blanka09]

This is for all ye physists.. :biggrin:
OK I have a question for ya... if ya know the answer post..
if ya don't ... well don't :biggrin:
Ok here it goes..
Two trains on 2 tracks were moving opposite each other at a speed of 60km/h.. yes both at the same speed
Now, at a point in time they were 60km apart from each other...
At this point(I mean the same time when they were 60km from each other), a bird started to fly to and fro from the two trains...
It would fly to the first one and immediately it lands, go to the second one (Don't ask me.. I have no idea why a bird would behave like this :biggrin:)
Assuming it doesn't stop or get tired, how far would the bird have travelled when the two trains cross each other... if measured on a straight line? :biggrin:
You can take this to your Physics teacher.. :biggrin:



Edited By blanka09 on Sep. 03 2003 at 18:27

[Xicer]

Uhhhhhhhh. ??? Ummmm I think about 10 minutes.

*sigh* im stupid...

[blanka09]

..No sweat.. you can always take it 2 ur physics teacher :biggrin:

[Tidus2K2]

if both going on a straight line they will neever cross assuming it's only 1 track per train.

[blanka09]

..Check this..
they're on different tracks.. close to each other.. moving towards each other from opposite directions.. let's say north and south
So at a point they'll cross each other... :biggrin:
the bird goes from the first train to the other .. to and fro :biggrin:



Edited By blanka09 on Sep. 05 2003 at 09:38

[Tidus2K2]

Thats a simple question to answer. Just give me 1 more piece of info, is the bird landing on each train every second or every minute.
the bird would have flown
21600km if every second
3600km if every minute
10800km if every 2 seconds
And so on.

[Orlando0]

It would fly to the first one and immediately it lands, go to the second one

Tidus2k2: If they were 60km appart from each other, no bird could move that fast.

blanka09: Unless you tell give some notification as to how fast the bird is moving, that question is impossible to answer.

[Tidus2K2]

Lets see warrior if he was reffering to a real live bird, or give a name or how fast the bird is the question will be easy to answer. Usually when researchers answer questions they don't have all the necessary info to make their answers easy. So I just worked with what I had, and I think I have the common sense to know that a bird can't fly that fast. The only bird that comes close to the hour mark maybe the Peregrine Falcon who can reach speeds upto 250km.

I was just assuming he was giving us a fictious question for us to answer.

[SBYRD5]

1,2000KM
600KM....those are my guesses....

Actually physically A birrd doesn't fly that fast to my knowledge.........wait what am I saying...(Falcon 120KM)

Wait a minute if both trains are going the same speed away from each other the measurement of distaqnce would be the same Circunfirance as the Earth.....and tell they cross again

So I would mulitply 1,2000KM times the Circumfirance of the Earth then measure off in sec.s, to min.s, to hrs.,etc.

[SBYRD5]

<span style='font-size:27pt;line-height:100%'>HOW FAST IS THE BIRD?</span>

Maybe a Faclcon could pull it off if it never got tired...

[blanka09]

Gee.. I wonder why it took such a long time to ask :biggrin:
Ok now let me give you the additional clue and... hmm.. let me see
I'll alter some numbers here..
Let's say the whole scenario is the same and the trains are moving at each other at half of the speed said earlier,
They are 60km apart when this strange bird starts it's trajectory
and as the smart one asked.. the bird is flying 60km/h
Now beat that :biggrin:

[blanka09]

Meh.. forgive me for double posting.. but really..
No one's still able to get the answer to this question! DAMN :biggrin:

[SBYRD5]

Gee.. I wonder why it took such a long time to ask :biggrin:
Ok now let me give you the additional clue and... hmm.. let me see
I'll alter some numbers here..
Let's say the whole scenario is the same and the trains are moving at each other at half of the speed said earlier,
They are 60km apart when this strange bird starts it's trajectory
and as the smart one asked.. the bird is flying 60km/h
Now beat that :biggrin:
At Each other at half the Speed....

Or away from Each other at half the Speed....


...Wait your changing the numbers so...is the Birds orignal speed of flight 120km..... (0_o)

[Kingryu1]

15 km.. i think

[Scorponok]

A falcon needs to be in a dive to go that fast, it can't do that for the distance given...

[blanka09]

fine I'll be posting the answer today! :biggrin:

[viper2040]

how bad do you want us to solve this?

cause this is getting into calculus...the biggest problem (besides the fact that i can barely remember calc) is that when the bird takes off, his path to the other train will actuall be a curve, because the other train is moving...

You forgot, by the way, to mention whether the bird lands at full speed, and whether, upon take off, he is instantly at full speed. If you want a good answer, you gotta tell us this stuff...and if im gonna solve this, i hope to god you got a reason for asking us...

Before posting this kind of problem, try to provide ALL releveant information...

and that is NOT physics, by the way....if it was truely a physics question, the answer would be that the bird would be unable to land on a full speed train because of its sheer velocity.



Edited By viper2040 on Sep. 15 2003 at 09:35

[SBYRD5]

Yes, the wind shear would be to much for the pour bird.

[blanka09]

how bad do you want us to solve this?

cause this is getting into calculus...the biggest problem (besides the fact that i can barely remember calc) is that when the bird takes off, his path to the other train will actuall be a curve, because the other train is moving...

You forgot, by the way, to mention whether the bird lands at full speed, and whether, upon take off, he is instantly at full speed. If you want a good answer, you gotta tell us this stuff...and if im gonna solve this, i hope to god you got a reason for asking us...

Before posting this kind of problem, try to provide ALL releveant information...

and that is NOT physics, by the way....if it was truely a physics question, the answer would be that the bird would be unable to land on a full speed train because of its sheer velocity.
Ahhh.. now you're the one bringing more Physics into it... :biggrin:
Honestly.. it's a simple question...
Do not bother yourself with it's sheer velocity or whether a bird can really do that or not...
Just be open minded and look at the facts! :biggrin:

[blanka09]

[quote:post_uid5="blanka09"]This is for all ye physists..
OK I have a question for ya... if ya know the answer post..
if ya don't ... well don't
Ok here it goes..
Two trains on 2 tracks were moving opposite each other at a speed of 60km/h.. yes both at the same speed
Now, at a point in time they were 60km apart from each other...
At this point(I mean the same time when they were 60km from each other), a bird started to fly to and fro from the two trains...
It would fly to the first one and immediately it lands, go to the second one (Don't ask me.. I have no idea why a bird would behave like this )
Assuming it doesn't stop or get tired, how far would the bird have travelled when the two trains cross each other... if measured on a straight line?
You can take this to your Physics teacher.. :biggrin:[/quote:post_uid5]
[color=red:post_uid5]The answer... *develops some kinda german accent* :biggrin:
Ok the 2 trains are moving at a speed of 60km/h and they are 60 km apart...
This should tell you (if you go to school.. ) that in 1 hour the first train at the left would complete the 60 km and the other one at the right would do the same !
Which in turn means that the both of them would cover 30km in 30 minutes and then cross each other's path!
It's alright.. you can take a minute to think about it :biggrin:
One travels for 30km at 60km/hr... therefore it would do that in half an hour or 30 minutes and the other does the same..
30km + 30km = 60km... (did I have to tell you that? :biggrin: )
And wallah... they cover the distance between each other and cross each other...

Now our bird would have therefore soared for 30minutes when the 2 trains cross each other.. you know it would go from one spot to the other and go back and continue this strange trajectory (and like I said earlier... I have no idea why a bird would do this :biggrin:
Therefore it would have travelled a distance of 30minutes times 60km/hr (which is speed times time for distance travelled)
Which means that the bird would have travelled 30km.. when the 2 trains meat![/color:post_uid5]
Thank you very much and eh.. :biggrin:



Edited By blanka09 on Sep. 16 2003 at 10:05

[SSJKarma]

problem in what you said blanka09 !

i agree with whoever said the problem couldn't be solved !

here is why...

1 - its all about the trains, nothing been mentionned for the bird !
2 - yeah the trains crosses in 30 minutes. but there is no way a bird could fly at 60km/h himself for 30 minutes !

conclusion... since the BIRD SPEED was never mentionned. there was basically no way to find that variable and since we don'T know and will never know, then that equation will never be solved !

[blanka09]

problem in what you said blanka09 !

i agree with whoever said the problem couldn't be solved !

here is why...

1 - its all about the trains, nothing been mentionned for the bird !
2 - yeah the trains crosses in 30 minutes. but there is no way a bird could fly at 60km/h himself for 30 minutes !

conclusion... since the BIRD SPEED was never mentionned. there was basically no way to find that variable and since we don'T know and will never know, then that equation will never be solved !
First of all I said open your mind.. :biggrin:
Do not think about the capabilities of any bird or whether a bird can fly 290km/hr or not... just solve the equation..
And when 2000warrior and Sbyrd asked.. I said 60km/hr
There you go..
And yeah one more thing!! :biggrin:

[SSJKarma]

really you sure you're good at MATHS ? cause i am not very good in myself and still even a baby would know that you cannot be OPEN MINDed in resolving those kind of equation !

its like if i asked you the answer to this...

there are 70 fruits in the bag...
20 apples and 5 oranges.
in the bag there is also STRAWBERRIES, RASPEBERRIES and TOMATOES. how many tomatoes is there in that bag ?

see, there is nothing we can do to solves such a problem cause there is variables we don't know that can actually be anything !

the only thing we can do is say what the numbers could be, without actually prooving it !

example:
20+5+X+Y+Z=70
there is no way to find X, Y or Z without only guessing !
the answer in this case, would be something like this...
X could be ... 1
Y could be ... 1
Z could be ... 43

see, too many solution possible, but there will never any way to actually proove what's int he bag without having all the facts in themselves !

same goes for your equation with the bird.

he could be so fast that he could travel 5 times the distance before the two trains meets.
he could be so slow that never will he get on the other train before they actually cross each other.
see what i mean now ?

we can be open minded like you say, but logically its another impossibility !



Edited By SSJKarma on Sep. 17 2003 at 19:37

[SBYRD5]

And when 2000warrior and Sbyrd asked.. I said 60km/hr
There you go..
And yeah one more thing!! :biggrin:
I'm so foolish I use to solve those train problems so easily....I'm a shamed of myself.....it's an Algebra problem too.......


ugh......

NOOO!!!!


And you got that one more thing....qoute from Jackie Chan Adventures.....jerk....J/K

[blanka09]

really you sure you're good at MATHS ? cause i am not very good in myself and still even a baby would know that you cannot be OPEN MINDed in resolving those kind of equation !

its like if i asked you the answer to this...

there are 70 fruits in the bag...
20 apples and 5 oranges.
in the bag there is also STRAWBERRIES, RASPEBERRIES and TOMATOES. how many tomatoes is there in that bag ?

see, there is nothing we can do to solves such a problem cause there is variables we don't know that can actually be anything !

the only thing we can do is say what the numbers could be, without actually prooving it !

example:
20+5+X+Y+Z=70
there is no way to find X, Y or Z without only guessing !
the answer in this case, would be something like this...
X could be ... 1
Y could be ... 1
Z could be ... 43

see, too many solution possible, but there will never any way to actually proove what's int he bag without having all the facts in themselves !

same goes for your equation with the bird.

he could be so fast that he could travel 5 times the distance before the two trains meets.
he could be so slow that never will he get on the other train before they actually cross each other.
see what i mean now ?

we can be open minded like you say, but logically its another impossibility !
See Karma.. when I meant be open minded,
I didn't mean form up numbers from your head that weren't there
All you needed to solve that equation were given in the initial question.. EXCEPT THE SPEED OF THE BIRD
Which 2000Warrior and Sbyrd asked and I gave it to them *yeah the smart ones :biggrin: *
I said be open minded and not think about the possibilities of a bird flying 60km/hr..
It might be possible or not.. Who cares??
The nos are there for you to solve the question and not to ponder about..
It was a really easy question and all you needed was to calculate the time it would take for the 2 trains to collide.. simple!
The trajectory of the bird wasn't needed
It was just to confuse many... (and I must say.. it worked! :biggrin: )
So you see it wasn't that hard..
Be expecting more in the future :biggrin:

And you got that one more thing....qoute from Jackie Chan Adventures.....jerk....J/K
No really.. call me a jerk.. cause I did
And it's not one more thing...
It's oone mooooooore thing :biggrin:

.. ah .. uncle :biggrin:



Edited By blanka09 on Sep. 19 2003 at 09:18