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Thread: confused about a bus...

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    Question confused about a bus...

    This theory always gets the better of me when i have nothing else to think about....and it still baffles me...

    If you stand on the top deck of a double decker bus and jump whilst the bus is in motion...you land in the same place on the bus....except you and the bus would have moved forward.

    However if you stood on the roof and jumped YOU would be in the same place as when you jumped but the bus would have moved forward.

    I hope i explained that well.....

    Im sure its all about velocity or something..but it still baffles me....

    Zara xx

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    Ok, I've thought about this before....And the only solution I could think of would be the 'medium' in which you are actually in...What I mean is that a pea in a bottle full of water would stay relatively stationary when thrown, where as a pea say resting on the cap would move a lot i.e- it would fall off.
    So in this scenario, the medium is the water.
    In the bus the medium is the air on the bus which travels with the rest of the bus on the inside...

    Sorry if this is not so clear, but it kinda makes sense I suppose! :-s

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    How can you be the Jan 2010 escort of the month when it's only the 6th of January???

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    Very simple.....you are in the bus and although not moving forward by yourself, the bus is vicariously moving you forward.........if the bus moved 10 meters along the road, everybody on the bus would be the same distance further along the road. If however, you jump high enough on the roof of the bus and the bus accelerates sufficiently, the bus will move forward and you could end up just moving downward.........your motion is then independent of the bus's motion.

    On the other hand, if you're on a plane and it's going forward, stay with it.................but if it's going downward more rapidly then it's going forward, time to go independent and use a parachute.

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    Smile haha

    oh nighthawk

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    Quote Originally Posted by Zara D View Post
    This theory always gets the better of me when i have nothing else to think about....and it still baffles me...

    If you stand on the top deck of a double decker bus and jump whilst the bus is in motion...you land in the same place on the bus....except you and the bus would have moved forward.

    However if you stood on the roof and jumped YOU would be in the same place as when you jumped but the bus would have moved forward.

    I hope i explained that well.....

    Im sure its all about velocity or something..but it still baffles me....

    Zara xx
    ..i never even thought about that before you said it now its gona bug me..
    hope its the bus to Cork you are on anyway???....
    "Courtesy costs nothing, yet buys things that are priceless." - Respect for all Escorts at all times!...

    Captain Jack Sparrow - I make water wet

    Thank you Ladies for the good times x..

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    Use an airplane as a better example.

    You'd think that, since the airplane is travelling at hundreds of miles per hour, if you jumped suddenly, you'd no longer be "in contact" with the airplane, and would thus no longer be travelling at hundreds of miles an hour. You might expect to be splattered over the rear galley or something as the airplane speeds on without you.

    It doesn't happen because you're still travelling at hundreds of miles an hour - the same speed as the airplane, in fact - when you jump up from the floor of the airplane. It's the same reason that you don't move if you jump on a train.

    If you were in a falling lift, some people think that if they jumped at the last second, they might save themselves from being crushed to death. In a similar way, this doesn't happen because they have been falling at the same speed as the lift for the past several storeys, and would end up as goo anyway.

    But if you really want to wreck your head?

    What if there was a fly on an airplane? Why is the fly theoretically able to fly around inside the airplane from take-off to touchdown and never end up splattered all over the wall?


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    It's the enclosed environment that shields you from forces such as wind and atmospheric pressure which would slow you down once the driving force (the bus) which is accelerating you is removed (when you jump). Jump inside the bus minimal influence from outside forces so your momentum stays similar to the busses so you land in a similar position, on top of the bus full outside influence slows you down while the bus maintains the same momentum so you land further back from your original position (lets hope you don't like the back of the bus )

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    Ex P will have the answer as he has plenty experience of jumping off The Clarion. But that doesn't move so it's a completely different thing

  10. #10

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    Quote Originally Posted by Zara D View Post
    This theory always gets the better of me when i have nothing else to think about....and it still baffles me...

    If you stand on the top deck of a double decker bus and jump whilst the bus is in motion...you land in the same place on the bus....except you and the bus would have moved forward.

    However if you stood on the roof and jumped YOU would be in the same place as when you jumped but the bus would have moved forward.

    I hope i explained that well.....

    Im sure its all about velocity or something..but it still baffles me....

    Zara xx
    Can you try doing both to ensure your theory is correct ??

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