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Post by rmc on Nov 4, 2012 18:58:25 GMT
Posted by Armymen on October 17, 2011, from DCI (Discovery Channel International) Mythbusters forums:
I see that add on tv with the cadilac go faster then the arrow. Is this possible? Can a car pass a arrow?
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Post by Cybermortis on Nov 4, 2012 19:09:10 GMT
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Post by memeengine on Nov 4, 2012 20:24:52 GMT
I guess this is a case of deciding whether the question is if a Cadillac can out run a particular arrow or if it can out run every arrow?
In the first case, as Cyber's figures show, the answer is yes (and it would be possible to engineer far slower arrows to guarantee it). In the latter, it's more a question of how fast can you make an arrow go? Are we limited to launching it with a bow?
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Post by flippons on Nov 4, 2012 20:27:51 GMT
I'm not being facetious here, but how else can you launch an arrow? The only way I can think of is a "rocket-propelled arrow", which seems a bit absurd.
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Post by memeengine on Nov 4, 2012 20:41:10 GMT
I'm not being facetious here, but how else can you launch an arrow? The only way I can think of is a "rocket-propelled arrow", which seems a bit absurd. You could use a large crossbow/ballista to launch it, they'd be able to put more energy into the arrow than a conventional bow. Alternatively, you could put it into a pipe and use compressed air or put it into a gun barrel and use any of the various propellant charges (such as gunpowder) that are available. As long as there's some wadding behind the arrow to seal the barrel/pipe that should work too. I suppose that a limiting factor in these cases would be the strength of the arrow. |
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Post by cdgman on Nov 4, 2012 20:46:31 GMT
It would matter at what distance the speed is measured. I would imagine at the beginning of a run the arrow would be faster but the further they go, the arrow would decelerate while the car accelerates.
Now maximum speed is a whole other question as earlier stated as to what bow and/or bolt/arrow is used and the experience of the driver.
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