The next conumdrum following the "Plane take off?" resolution:

[E equals MC2]

If I?m standing inside a walled-in cabin of a train going 50 mph and I jump, I would NOT suddenly land in BACK of the cabin because I?m MOVING with the train.

Now, what if I was standing on an empty, open-faced freight car of the train? (just the flat surface)

1. If I jump, would I suddenly land towards the back of the train?
2. If you said no, what if I jumped 30 ft in the air? Would I land back on the EXACT same spot as I left? At what point do I lose my velocity WITH the train?

You mean to tell me if I jump/launched to 200 yards, I would land in the roughly same spot? (sans wind resistance), never losing the velocity of the train? What if I jump 500 yards, 1000, 2000? I will NEVER lose the velocity of the train?

 

[jandrews]

wat

 

[apac]

Originally posted by: E equals MC2
If I?m standing inside a walled-in cabin of a train going 50 mph and I jump, I would NOT suddenly land in BACK of the cabin because I?m MOVING with the train.

Now, what if the I was standing on an empty, open-faced freight car of the train? (just the flat surface)

1. If I jump, would I suddenly land towards the back of the train?
2. If you said no, what if I jumped 30 ft in the air? Would I land back on the EXACT same spot as I left? At what point do I lose my velocity WITH the train?

Uh...when air resistance slows you down.

 

[NuclearNed]

You have forward momentum that matches that of the train. If you jump up, you will land in roughly the same spot from which you departed. There will be a tiny shift towards the back of the train due to air resistance.

 

[IceBergSLiM]

I always wondered that. If you put a basket ball hoop up at the ned of the car could you jump high enough and dunk the ball 30 feet away.

 

[Lotheron]

Originally posted by: E equals MC2
If I?m standing inside a walled-in cabin of a train going 50 mph and I jump, I would NOT suddenly land in BACK of the cabin because I?m MOVING with the train.

Now, what if the I was standing on an empty, open-faced freight car of the train? (just the flat surface)

1. If I jump, would I suddenly land towards the back of the train?
2. If you said no, what if I jumped 30 ft in the air? Would I land back on the EXACT same spot as I left? At what point do I lose my velocity WITH the train?

It depends on the conditions, ie wind, speed, etc. You will move back a very little bit on a normal jump (only very very slightly). At a 30 foot jump, you will move back a bit as you will have resistance to the air as you are no longer being propelled by the train.

 

[Mr Pickles]

This is 101 dude... change the topic name or ban.

 

[FoBoT]

objects in motion tend to stay in motion

you would slow slightly due to air friction , but barely enough to notice

obviously the higher you make it, the greater the effect

 

[BrownTown]

Umm well obviously the answer concerns air resistance and in order to accurately model this we would need to know things such as your weight and crossectional area, that being said, while standing on an open car the wind resistance acting on you is balanced out by the friction between your shoes and the car. Upon jumping the friction between your feet and the car is gone, and therefore the only force acting is the wind resistance which will attempt to slow you down from your initial 50 mph. The distance you jumped in the air will determine the time you are airborne, your crossectional area (and other factors) will determine the force acting against you, and your mass would determine how quickly that force accelerates you. Of coruse as you slow down the force also decreases, to we will need a little calculus to get this all done.

EDIT: oh yeah, there isn't a trick here to confuse people, in order to have a trick question it actually has to be TRICKY therefore you fail at life.

 

[torpid]

I find it mathematically unlikely you will ever land on the EXACT spot even if you jump on good old planet Earth dirt.

 

[NuclearNed]

The answer to the real question is "No, this thread isn't going to start a new internet phenomenon like the airplane on the treadmill thing."

 

[radioouman]

Originally posted by: E equals MC2
Now, what if the I was standing...

Now what if the you were standing...

 

[FoBoT]

Originally posted by: NuclearNed
The answer to the real question is "No, this thread isn't going to start a new internet phenomenon like the airplane on the treadmill thing."

yes, E equals MC2 would be more likely to attain internet fame by claiming something patently absurd, like he didn't know that pickles are made of cucumbers

 

[nakedfrog]

Something like this

 

[George P Burdell]

Yes, I can finally use some of the new fail images I uploaded on bbzzdd:
Text

 

[homercles337]

You loose some forward momentum the second you are removed from the train (even in a vacuum). The longer you are "removed" the more you loose. This is stupid.

 

[NuclearNed]

Originally posted by: homercles337
You loose some forward momentum the second you are removed from the train (even in a vacuum). The longer you are "removed" the more you loose. This is stupid.

Wrong. In a vacuum, you don't lose any momentum.

 

[E equals MC2]

Originally posted by: homercles337
You loose some forward momentum the second you are removed from the train (even in a vacuum). The longer you are "removed" the more you loose. This is stupid.

You sure? All the guys above you disagree with you. Even if you are launched 1000 ft in the air, you'll still land on the roughly same spot (ONLY wind resistence pushes back)

 

[lyssword]

there is a stream of air above the train,if you jump you will obviously move toward the back of the train. I don't see any problem with this except that the question is retarded and there is no controversy whatsoever.. Stick your hand out of a moving car? what happens? your stupid hand moves toward the back of the car. In the train there is a bit of friction that's stopping wind from blowing you off the train. If the train is fast enough, the friction of your feet will not be enough and you don't even have to jump to get blown off back of the train. /endfuckingstupidthread


... no air resistance? what kind of moving open freight train is that? :roll:

 

[legoman666]

you're an idiot for asking the question. go take physics 101.

 

[Beattie]

Originally posted by: E equals MC2
If I?m standing inside a walled-in cabin of a train going 50 mph and I jump, I would NOT suddenly land in BACK of the cabin because I?m MOVING with the train.

Now, what if I was standing on an empty, open-faced freight car of the train? (just the flat surface)

1. If I jump, would I suddenly land towards the back of the train?
2. If you said no, what if I jumped 30 ft in the air? Would I land back on the EXACT same spot as I left? At what point do I lose my velocity WITH the train?

You mean to tell me if I jump/launched to 200 yards, I would land in the roughly same spot? (sans wind resistance), never losing the velocity of the train? What if I jump 500 yards, 1000, 2000? I will NEVER lose the velocity of the train?

You people posting these threads are getting dumber and dumber.

1) no
2) you will land exactly where you jumped (since you removed other forces like wind resistance) You never just spontaneously lose or gain any energy.

 

[YOyoYOhowsDAjello]

Originally posted by: E equals MC2

You mean to tell me if I jump/launched to 200 yards, I would land in the roughly same spot? (sans wind resistance), never losing the velocity of the train? What if I jump 500 yards, 1000, 2000? I will NEVER lose the velocity of the train?

If we're ignoring wind resistance and taking out "curvature of the earth" type requirements and you don't reach escape velocity of the earth's gravitational pull, then I think that takes care of most of the effects that would prevent you from landing back in the same spot.

 

[Tiamat]

On a moving train, you will have the same speed as the train. You jump up, you gonna land roughly in the same spot unless there is a force that pushes you in a different direction (could be air friction forces, etc.) Of course, you would not have the same momentum as the train's mass is different than yours. This is important when considering the effect of opposing forces and their effect on movement given the same exposed surface area.

 

[Beattie]

I thought of another example.

If you are standing on Earth and jump do you magically move west?

The earth is rotating below you after all.

 

[torpid]

Originally posted by: YOyoYOhowsDAjello

Originally posted by: E equals MC2

You mean to tell me if I jump/launched to 200 yards, I would land in the roughly same spot? (sans wind resistance), never losing the velocity of the train? What if I jump 500 yards, 1000, 2000? I will NEVER lose the velocity of the train?

If we're ignoring wind resistance and taking out "curvature of the earth" type requirements and you don't reach escape velocity of the earth's gravitational pull, then I think that takes care of most of the effects that would prevent you from landing back in the same spot.

Except for the fact that it is quite difficult to jump perfectly straight up into the air.