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NIGHT TIME SHADOW

@ what speed would I need to fly heading west to be able to keep looking @ a sunset.....(what speed is the night time shadow across the earth)

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  • Asked by winxx
  • on 2010-10-17 19:06:49
  • Member status
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Categories: Domestic Science.

Tags: sky, speed, night.

 

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petethebloke says:

At the equator, a speed of one earth circumference per day should do it. If you're north or south of the equator then you'll have to recalculate - not just for latitude, but also for season.

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Tags: sky, speed, night.

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posted on 2010-10-18 10:56:47 | Report abuse


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BRidder says:

The circumference of the earth at the equator is 24,902 miles (40,075km)

To move at the same speed as the rotation of the earth you would have to move at 1038mph (1670kph)

This assumes that you are moving along the ground and there is nothing in your way.

A better measure would be to calculate this at the crusing height of a jet aircraft. For Concorde flying at 60,000 feet you would have to be traveling slightly faster at 1039mph which was possible as Concorde was able to fly at 1,350mph (mach 2.04)

Just a shame that it is unlikey that there will ever be such an aircraft made again

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Tags: sky, concorde, speed, night.

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posted on 2010-10-18 16:26:31 | Report abuse


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