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Physics Question: I'm stumped

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Old Oct 30, 2005 | 06:41 PM
  #11  
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Old Oct 30, 2005 | 06:42 PM
  #12  
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I think I may have found the answer:

Objects launched to the north from the equator retain the eastward component of velocity of other objects sitting at the equator. But if they travel far enough away from the equator, they will no longer be going east at the same speed as the ground beneath them.
The result is that an object traveling away from the equator will eventually be heading east faster than the ground below it and will seem to be moved east by some mysterious "force". Objects traveling towards the equator will eventually be going more slowly than the ground beneath them and will seem to be forced west. In reality there is no actual force involved; the ground is simply moving at a different speed than its original "home ground" speed, which the object retains.

So, in essence, this means that since you are jumping a minimal vertical distance, you would land in the same spot as where you were before you jumped, right?
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Old Oct 30, 2005 | 06:45 PM
  #13  
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Originally Posted by red94teg
I think I may have found the answer:

....

So, in essence, this means that since you are jumping a minimal vertical distance, you would land in the same spot as where you were before you jumped, right?
Well, it supports my half-assed assumption quite nicely. :exnbp:
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Old Oct 30, 2005 | 06:52 PM
  #14  
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Eeeeexcellent...One to go. Question: A river is flowing due north in the Northern Hemisphere. Which river bank, the east or the west, would you expect to show more erosion due to the Coriolis effect?

My response was that the west river bank would show more erosion due to the fact that objects deflect to the right in the northern hemisphere as a result of the earth's rotation.


But maybe I have it backwards?
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Old Oct 30, 2005 | 08:10 PM
  #15  
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Originally Posted by red94teg
Eeeeexcellent...One to go. Question: A river is flowing due north in the Northern Hemisphere. Which river bank, the east or the west, would you expect to show more erosion due to the Coriolis effect?
Originally Posted by red94teg
The result is that an object traveling away from the equator will eventually be heading east faster than the ground below it and will seem to be moved east by some mysterious "force".
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Old Oct 30, 2005 | 08:18 PM
  #16  
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The rotation of the earth is counterclockwise (eastward). As a result of the Coriolis Effect, objects in the northern hemisphere deflect to the right and objects in the southern hemisphere deflect to the left...The coreolis effect has no effect at the equator so only the counterclockwise (eastward) spin of the Earth is taken into account.
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Old Oct 30, 2005 | 09:14 PM
  #17  
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Originally Posted by red94teg
that the west river bank would show more erosion due to the fact that objects deflect to the right in the northern hemisphere as a result of the earth's rotation.
precisely.
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Old Oct 31, 2005 | 04:17 AM
  #18  
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"Once a body is in motion it will stay in motion unless acted upon by another force"

If you were to jump at the Earth's equator (and did not take air friction into effect - aka in a vaccuum) you would land in the same spot you jumped. If you took air friction into account you would land just a little bit off your spot - a negible bit east of your spot.
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Old Oct 31, 2005 | 05:01 AM
  #19  
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i think its the same as when you travel in a car going 100 km/h and spit right in front of you... how come that spit does hit you in the face? you are obviously not spitting at +101 km/h right?
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Old Oct 31, 2005 | 05:05 AM
  #20  
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Originally Posted by Tark
i think its the same as when you travel in a car going 100 km/h and spit right in front of you... how come that spit does hit you in the face? you are obviously not spitting at +101 km/h right?
that's wind resistance.... completely different.
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