A bear dropped into a hole from v=0 m/s at start, 2 seconds later, it landed on the bottom, the hole is 20 m, if the air resistant does not count, what colour is the bear? (useful formula S=Ut+½at²)
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Ping
Je pense, donc je suis!
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Red5
Systems Manager Curmudgen
Ping wrote:A bear dropped into a hole from v=0 m/s at start, 2 seconds later, it landed on the bottom, the hole is 20 m, if the air resistant does not count, what colour is the bear? (useful formula S=U+½at²)
More importantly, if no one is there to hear the bear hit the bottom, does he make a sound? -
Err... the same color he was when he was dropped (assuming he didn't land in some dye or other staining substance)? Or is that too obvious?Ping wrote:A bear dropped into a hole from v=0 m/s at start, 2 seconds later, it landed on the bottom, the hole is 20 m, if the air resistant does not count, what colour is the bear? (useful formula S=U+½at²) -
Ping
Je pense, donc je suis!
assuming there isn't any dye, oh yes, and the time sound takes to travel doesn't count. It's proper physics question.
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jsampsonPC
SampsonBlog.com SampsonVideos.com
Ping wrote:A bear dropped into a hole from v=0 m/s at start, 2 seconds later, it landed on the bottom, the hole is 20 m, if the air resistant does not count, what colour is the bear? (useful formula S=U+½at²)
Either Red, for the blood flowing from his 20m drop....Black, for the dim nature of the pit, where little to no light can enter, or his original colour
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blowdart
Peek-a-boo
Black, it's in a hole, so there's no light for it to reflect, and hence has no colour.
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jsampsonPC
SampsonBlog.com SampsonVideos.com
I guess if you want a TRUE answer...
bear.coat.color != "bright pink";
There...there's a correct answer -
PaoloM
Hypermediocrity
blowdart wrote:Black, it's in a hole, so there's no light for it to reflect, and hence has no colour.
That is if you assume that colour is not an intrinsic property of an object. -
blowdart
Peek-a-boo
PaoloM wrote:
blowdart wrote:Black, it's in a hole, so there's no light for it to reflect, and hence has no colour.
That is if you assume that colour is not an intrinsic property of an object.
DataSet.Colour?
Nope, not there.
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jsampsonPC
SampsonBlog.com SampsonVideos.com
PaoloM wrote:
blowdart wrote:Black, it's in a hole, so there's no light for it to reflect, and hence has no colour.
That is if you assume that colour is not an intrinsic property of an object.
Ah, then I ask you - what colour is a polar bear
Wait! Is this bear that dropped into the hole a polar bear?
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Angus
.
jsampsonPC wrote:PaoloM wrote: blowdart wrote:Black, it's in a hole, so there's no light for it to reflect, and hence has no colour.
That is if you assume that colour is not an intrinsic property of an object.
Ah, then I ask you - what colour is a polar bear
Wait! Is this bear that dropped into the hole a polar bear?
Don't they have transparent, drinking-straw like fur?
Angus Higgins
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jsampsonPC
SampsonBlog.com SampsonVideos.com
Angus wrote:Don't they have transparent, drinking-straw like fur?
Angus Higgins
For the most part They, like other arctic animals reflect the colours around them. Therefore, they have no color that is specific to themselves, but instead depend on their environment to reflect itself on them.
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Ping
Je pense, donc je suis!
Hee hee hee... the true answer is....White
U=0m/s, S=20m/s t=2s put them into the formula..
20=0+½2²a
a=10m/s²
the accelleration of gravity (g) becomes larger from equator to the pole, because the earth is not really round. so the bear must be in either of the poles. Since there's no bear in South pole, so the bear must be in the north!! and the only bears that live in north pole is----White!!!!
Have you got it right? -
blowdart
Peek-a-boo
Ping wrote:
Have you got it right?
Actually it's too cold on the pole for polar bears to survive, nor is there any foor for them as they couldn't break through the ice to access it. Whilst they live in the artic region, it's near the edge of the ice flows, not in or around the pole itself.
So the bear would have to have been flown in especially for the experiment, assuming the pole itself has your stated gravity. Which means it could be any bear.
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Jason Cox
Longtime C9 Lurker
This is simple, the Bear is 50m long, it wont fit a hole 20m wide. The Bear would be the same color it was when you tried to push it in, and the color would be dependent on wether you found the Bear in the artic, desert, woodlands, etc.
(refering to the Tu-95 Bear Bomber) -
jsampsonPC
SampsonBlog.com SampsonVideos.com
Actually, Ping, you're not exactly correct there
Polar Bears aren't always white, as we briefly alluded to a couple posts back You missed the Season variable....when did this take place? Chances are, the bear is dark yellow, and not white -
Angus
.
Isn't the acceleration due to gravity at the North Pole approximately 9.832m/s² not 10m/s² anyway?
Angus Higgins -
jsampsonPC
SampsonBlog.com SampsonVideos.com
Angus wrote:Isn't the acceleration due to gravity at the North Pole approximately 9.832m/s² not 10m/s² anyway?
Angus Higgins
For a bear, dropping 20meters....does that difference really matter?
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