If you were standing on a train travelling at high speed

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sheva

Well-Known Member
The fly/train thing is something I`ve mentioned to people before, they all think I`m totally bonkers. Without getting into the science of things (I`m no science expert ) then on the face of it , it must (theoretically at least) be true.
My other theory, similar to jumping inside a train, is being in a free-falling lift and jumping up just before the lift hits the ground.Would this save you from injury?
 

sheva

Well-Known Member
The lift thing may not be scientifically true, but It makes for a good drunken pub conversation. :tongue:
 

Dilbert

Active Member
Location
Blackpool
Doh, I didn't read the OP properly and assumed it meant on top of the train. I will go to the corner and write out a thousand times "I must state my assumptions". :rolleyes:
 

Panter

Just call me Chris...
Yellow Fang said:
Newton's first law:

"Every object persists in its state of rest or uniform motion in a straight line unless it is compelled to change that state by the forces impressed on it."

The train is moving at X mpg, you're moving along at X mph, the air in the carriage is moving at X mph, so there's no friction. Therefore you're going to land exactly where you were on the train.

But surely gravity would still act as a "brake" even with no friction?
 

Norm

Guest
Gravity sucks, downwards. It will define the arc of the jumper but it will not affect his speed relative to the train or the air around him.
 
jimboalee said:
Deadly serious ??? :biggrin:

1 day = 1 revolution of the Earth on it's axis.
This is the only measurement of time we need to be concerned with.
..

Well not quite it is - 360.9856 degrees per day.
As we are moving around the sun we call 1 day the period in which we get round to the same point relative to the sun. As we have moved in our orbit around the sun (1/365 and a bit), the sun is about one degree further over.
 
What if I am travelling at the speed of light in my car and switch my headlights on. Will I be able to see?
 

Panter

Just call me Chris...
Norm said:
Gravity sucks, downwards. It will define the arc of the jumper but it will not affect his speed relative to the train or the air around him.

Ok, I take your point. :biggrin:


If it was me jumping, I'd land in a different place though, just to be bloody awkward B)

*but quietly so as not to disturb Rythem Thief*
 

jimboalee

New Member
Location
Solihull
Shall I start another thread, or pose the question here?

Tollers, figure this?

When you buy a mechanical wristwatch, it SLOWS down as it 'runs in'.

How does this happen if the bearings are polishing and it should run easier?
 
jimboalee said:
Shall I start another thread, or pose the question here?

Tollers, figure this?

When you buy a mechanical wristwatch, it SLOWS down as it 'runs in'.

How does this happen if the bearings are polishing and it should run easier?

Assuming that to be true the reason may be -

The timekeeping is down to the movement of the balance spring which is wound around a balance wheel. If the balance wheel runs better it will run further on each stroke so with each stroke being longer the watch runs slower.
 
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