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Topic: How to stop?
Message: Posted by: TomasB (Jul 7, 2005 08:04AM)
You are in a car traveling at a constant speed above zero. On your left is a void. On your right is a firetruck which isn't moving even an inch backwards or forwards relative to your car. In front of you is a pig, bigger than your car, running. A helicopter follows right behind you at ground height. Both pig and helicopter have the same speed.

How do you stop?

/Tomas
Message: Posted by: Roland Henning (Jul 7, 2005 08:35AM)
Pushing the break pedal! That's how you stop a car.
Message: Posted by: JackTrumper (Jul 7, 2005 08:49AM)
Break and make the helicopter fly above ground level..
Message: Posted by: Doctor Whoston (Jul 7, 2005 10:06AM)
A pig bigger than a car? Is that normal in Sweden?
Anyhow, I'm presuming that Roland's answer is not the one you were wanting. And I am presuming you wish me to stop safely.
Can I not just swerve off into the void?
DW
Message: Posted by: Jonathan Townsend (Jul 7, 2005 11:14AM)
Something about "a void" and "avoid" which might be useful if this were the matrix.
Message: Posted by: blazes816 (Jul 7, 2005 11:23AM)
You never said that the helicopter was flying low.......mabey Roland was right.
Message: Posted by: TomasB (Jul 7, 2005 11:39AM)
Ground height is pretty low...

/Tomas
Message: Posted by: Sapient (Jul 7, 2005 12:10PM)
Smashing into any of the other things around you should get you to a stop pretty quickly. I recommend the helicopter.
Message: Posted by: Jonathan Townsend (Jul 7, 2005 12:35PM)
[quote]
On 2005-07-07 09:04, TomasB wrote:
...A helicopter follows right behind you at ground height. Both pig and helicopter have the same speed...[/quote]

The pig and the chopper are moving toward you from opposite directions? One might expect to be flattened very soon unless one does something.
Message: Posted by: Stephen Buxton (Jul 7, 2005 12:42PM)
If the helicopter is at ground level, it isn't likely to be moving. Therefore the pig is still, as is everything else, and you aren't moving either.

However, you state that you are traveling at a constant speed above zero. Is this because the Earth is rotating in space?
Message: Posted by: Jonathan Townsend (Jul 7, 2005 02:00PM)
Please Stephen if Tomas has a way to stop the world we could all be in trouble. Come to think of it he says he has a way to make voids... be scared, very scared.
Message: Posted by: TomasB (Jul 7, 2005 02:29PM)
Sorry about this but...

...get off that merry-go-round and let someone younger ride it!

/Tomas
Message: Posted by: Roland Henning (Jul 7, 2005 02:32PM)
I like the idea. Imagine the car is standing. Yet, due to the fact that the earth moves through space it would still have a speed that is approx. 30 kilometers per second (!) So we would be travelling with a constant speed above zero. In the front there still could be the big pig running. (It would be running away from the car) Firetruck and helicopter would be standing. So in order to stop the car relative to the ground you would have to do nothing.

But what if the car is facing the the wrong direction. Against the earths movement. Then stopping the car would mean that you have to speed up the car to 30 kilometers per second.... oh sorry, that is not leading to anything.
Message: Posted by: stanalger (Jul 7, 2005 03:06PM)
This scenario must take place behind the looking glass.
Message: Posted by: Jonathan Townsend (Jul 7, 2005 03:51PM)
Got you Tomas, good one. :)
Message: Posted by: stanalger (Jul 7, 2005 04:25PM)
[quote]
This scenario must take place behind the looking glass.
[/quote]

...unless you are sitting backwards in the car.
Message: Posted by: tbaer (Jul 7, 2005 06:35PM)
A constant speed above zero, if it's above zero it must be cold there.
Message: Posted by: Jonathan Townsend (Jul 8, 2005 12:09AM)
Speed is not the same as velocity.

He did say "stop the world" :)
Message: Posted by: Euangelion (Jul 8, 2005 08:23AM)
[quote]
On 2005-07-07 15:32, Roland Henning wrote:
I like the idea. Imagine the car is standing. Yet, due to the fact that the earth moves through space it would still have a speed that is approx. 30 kilometers per second (!) So we would be travelling with a constant speed above zero. In the front there still could be the big pig running. (It would be running away from the car) Firetruck and helicopter would be standing. So in order to stop the car relative to the ground you would have to do nothing.

But what if the car is facing the the wrong direction. Against the earths movement. Then stopping the car would mean that you have to speed up the car to 30 kilometers per second.... oh sorry, that is not leading to anything.
[/quote]

Just goes to show everything is relative; and you wouldn't like my relatives.