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 Post subject: Zweites Rätsel
PostPosted: Sun 25. Dec 2011, 18:32 
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Fast auf diese rätsel hier vergessen... naja hier is mal wieder eins :D

Ein Fahrradfahrer fährt mit 20km/h einen hang hinunter, dann fährt er die selbe strecke mit 10km/h wieder zurück.
Was ist seine Durchschnittsgeschwindigkeit?

Taschenrechner darf verwendet werden.

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3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706
7982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381
9644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412
7372458700660631558817488152092096282925409171536436789259036001133053054882046652138414695194151160
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3200056812714526356082778577134275778960917363717872146844090122495343014654958537105079227968925892

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Posted: Sun 25. Dec 2011, 18:32 


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 Post subject: Re: Zweites Rätsel
PostPosted: Sun 25. Dec 2011, 19:05 
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Ich hab so das Gefühl das in diesem Rätsel ne Falle versteckt ist, aber ich glaube: 15km/h.

Denn: 20+10=30 30:2=15

:w00t:
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Edit: Ich bin zu dumm :awesome:


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 Post subject: Re: Zweites Rätsel
PostPosted: Sun 25. Dec 2011, 20:21 
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also wenn dass mit den 15km/h nicht stimmen sollte, dann sage ich mal 0km/h
denn: Geschwindigkeit = Weg/Zeit, und da der Radfahrer die Strecke ja wieder zurückfährt, könnte man rein mathematisch eigentlich sagen, dass er überhaupt keinen Weg zurückgelegt hat, daher 0km/h
?!

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 Post subject: Re: Zweites Rätsel
PostPosted: Sun 25. Dec 2011, 20:25 
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0km/h stimmt nicht.


Edit: Mav hat´s :P

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3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706
7982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381
9644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412
7372458700660631558817488152092096282925409171536436789259036001133053054882046652138414695194151160
9433057270365759591953092186117381932611793105118548074462379962749567351885752724891227938183011949
1298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184676694051
3200056812714526356082778577134275778960917363717872146844090122495343014654958537105079227968925892

π= ~3


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 Post subject: Re: Zweites Rätsel
PostPosted: Sun 25. Dec 2011, 20:54 
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[DH]BLUB wrote:
Edit: Mav hat´s :P
ich verrat's aber noch nicht :biggrin:

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 Post subject: Re: Zweites Rätsel
PostPosted: Tue 27. Dec 2011, 11:48 
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also wenn 0km/h nich stimmt muss ich nochmal nachdenken^^

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common sense is ironically not very common.

There are 3ways to do things: the right way, the Dorian way and the max power way!
Isn't that the Dorian way?
Yeah but FASTER!
Montreal: Max Power http://www.youtube.com/watch?v=6vC8xP0f_pA
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Epic Sax Guy (original not 10h version): http://www.youtube.com/watch?v=VrdwhXNt4qw


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 Post subject: Re: Zweites Rätsel
PostPosted: Thu 29. Dec 2011, 13:50 
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Auflösung
______________________________________________



Da der Radfahrer beim rauffahren nur die halbe geschwindigkeit fährt braucht er für die selbe strecke doppelt so lange, dh. 1/3 der zeit fährt er mit 20km/h und 2/3 mit 10km/h
1/3*20+2/3*10=13,3km/h

:respekt: @ Mav&Max

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3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706
7982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381
9644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412
7372458700660631558817488152092096282925409171536436789259036001133053054882046652138414695194151160
9433057270365759591953092186117381932611793105118548074462379962749567351885752724891227938183011949
1298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184676694051
3200056812714526356082778577134275778960917363717872146844090122495343014654958537105079227968925892

π= ~3


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 Post subject: Re: Zweites Rätsel
PostPosted: Thu 29. Dec 2011, 15:10 
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:o

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 Post subject: Re: Zweites Rätsel
PostPosted: Thu 29. Dec 2011, 20:12 
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bellamy hatte ja gar keine zeit zu antworten! :P

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common sense is ironically not very common.

There are 3ways to do things: the right way, the Dorian way and the max power way!
Isn't that the Dorian way?
Yeah but FASTER!
Montreal: Max Power http://www.youtube.com/watch?v=6vC8xP0f_pA
Image
Epic Sax Guy (original not 10h version): http://www.youtube.com/watch?v=VrdwhXNt4qw


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 Post subject: Re: Zweites Rätsel
PostPosted: Thu 29. Dec 2011, 20:54 
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hab 4tage mit der auflösung gewartet :/

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3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706
7982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381
9644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412
7372458700660631558817488152092096282925409171536436789259036001133053054882046652138414695194151160
9433057270365759591953092186117381932611793105118548074462379962749567351885752724891227938183011949
1298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184676694051
3200056812714526356082778577134275778960917363717872146844090122495343014654958537105079227968925892

π= ~3


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 Post subject: Re: Zweites Rätsel
PostPosted: Thu 29. Dec 2011, 20:58 
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mir fällt atm kein rätsel ein :S

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common sense is ironically not very common.

There are 3ways to do things: the right way, the Dorian way and the max power way!
Isn't that the Dorian way?
Yeah but FASTER!
Montreal: Max Power http://www.youtube.com/watch?v=6vC8xP0f_pA
Image
Epic Sax Guy (original not 10h version): http://www.youtube.com/watch?v=VrdwhXNt4qw


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