# Quiz question...

Discussion in 'Word Games' started by imamartian, 21 Jul 2010.

1. ### imamartian

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Surely 3g is a state? (not a mobile phone network !!),,, but speed would be 3g per second, and an acceleration would be 3g per second per second?

3. ### ChrisR

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Yes it's the sun , then I believe Proxima Centauri.

g is the acceleration due to gravity, measured in metres per second per second.
Speed in the same system is metres per second
so if the speed of light is 3e8 metres per second, and you accelerate at 10 metres per second, per second..., how long...

( 3e8 being notation for 3 followed by 8 zeroes)

4. ### Space cat

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In theory, at a constant acceleration of 30 m/s/s, you would reach 150,000,000 m/s in 5,000,000 seconds. Sadly, your fuel supply would not last that long.

5. ### imamartian

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another question for people to mull over.....

why do planes always have 2 contrails regardless of whether they have 2 or 4 engines?

(if you know, then say so, but don't give it away until other bods have guessed..)

6. ### oompah

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I don't know but I won't tell

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Me neither

8. ### oompah

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Picture clue.

9. ### Space cat

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Edit: Oops! I've just read the post properly.

11. ### imamartian

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err.. apart from in this scenario !!

12. ### Karinska

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Is it because you're flying Ryanair so only 2 of the 4 engines work

13. ### imamartian

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ha ha... useful for those on here who are afraid of flying !!

14. ### Space cat

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Here's a clue. What do most planes have two of?

15. ### oompah

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Chances they either fly or they don't.

16. ### ChrisR

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ABout a coupleof months. Fuel might last, but humans couldn't stand that acceleration for that long.
So if we're ever going to go far in the universe, which means travelling at that sort of speed, we're going to have to face it taking a year or more to get up to speed.

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