y u no do it?

Advertise virtually anything here, with CPM banner ads, CPM email ads and CPC contextual links. You can target relevant areas of the site and show ads based on geographical location of the user if you wish.

Starts at just \$1 per CPM or \$0.10 per CPC.

# [Physics]What's the colour of the bear?

Discussion in 'General Chat' started by orlando2008, Oct 23, 2008.

1. #1
A bear falls down to a hole. It falls down to 20m deep after 2s.

What's the colour of the bear?

Oct 23, 2008 IP
2. ### DaveMMPeon

Messages:
68
1
0
Trophy Points:
0
#2
The bear is White...

A hunter walked one kilometer south from his camp. Then he walked one kilometer west. There he shot a bear. Then he walked one kilometer north, and found that he was back at his camp.

What color was the bear?

Oct 23, 2008 IP
3. ### orlando2008Peon

Messages:
125
2
0
Trophy Points:
0
#3
That's white
but how can you guess it?

Oct 23, 2008 IP
4. ### DaveMMPeon

Messages:
68
1
0
Trophy Points:
0
#4
I am a physics teacher.

Only in the polar regions does A = 10m/s^2, hence the bear must be a white polar bear

Oct 23, 2008 IP
5. ### milamberBanned

Messages:
1,083
7
0
Trophy Points:
0
#5
Wowowowowowww wait a minute.. BRAVO DaveMM I like you LOL! Can you explain more how was that white?

Oct 23, 2008 IP
6. ### orlando2008Peon

Messages:
125
2
0
Trophy Points:
0
#6

Oct 23, 2008 IP
7. ### DaveMMPeon

Messages:
68
1
0
Trophy Points:
0
#7
The bear fell 20m in 2secsâ€¦

The average acceleration due to gravity is 9.8ms^2

However this is an average. You will get a different acceleration at different points on the earths surface because the earth is not a perfect sphere in fact it is more like a squashed orange. At the equator acceleration is lower than the average because the earth is wider at this point and at the poles the distance from the centre of the earth is less and so the acceleration due to gravity is higher in this regionâ€¦

Oct 23, 2008 IP
8. ### RightManNotable Member

Messages:
8,294
450
0
Trophy Points:
205
#8
Too much shooting of the bear is going on here......

Financial markets world over can perhaps take help of this shooter to shoot down the bears who are on wild rampage....

Regards,

RightMan

Oct 23, 2008 IP
9. ### pachecusWell-Known Member

Messages:
1,841
62
0
Trophy Points:
110
#9
WHITE....!!!!

01. The bear has fallen from a height of 10 m

02. It took square root(2) sec for it to fall.

03. Obviously it's initial velocity is zero (since it's a freely falling body).

04. Let's assume the acceleration due to gravity is: 'a' meters/seconds square at that place.

05. So applying the formula.. S = ut + (1/2*a*t^2) we know... u = 0, S =10, t = square root(2) secs Hence, 10 = 0*sqroot(2) + {(1/2) * a * 2 }

06. Solving the above equation gives a = 10 meters/seconds square

07. For a free falling body 'a' is the gravitational pull which is g=9.8m/s^2

08. Hence at that place where the bear fell, the acceleration due togravity is the highest (its greater than 9.8 and since wkt a)

09. This can happen only at the poles .. (North or South)

10. And we know that only polar bears can survive in the sub zero temperatures of the poles

11. And no points for guessing that the colour of a Polar bear is WHITE!!!

Oct 23, 2008 IP
10. ### 1prox.rActive Member

Messages:
177
2
0
Trophy Points:
60
#10
The bear should be red in color as it would definitely "CRASH" after a 20 M fall, thus bleeding badly.

Oct 23, 2008 IP
11. ### kodutWell-Known Member

Messages:
2,738
76
1
Trophy Points:
170
#11

Oct 23, 2008 IP
12. ### DaveMMPeon

Messages:
68
1
0
Trophy Points:
0
#12
White!! with red spots then...

Oct 23, 2008 IP
13. ### KeroseneAlpha & Omega™Staff

Messages:
11,364
572
4
Trophy Points:
385
#13
What if a polar explorer's teddy bear falls down the hole?

Oct 23, 2008 IP
14. ### l3ftyWell-Known Member

Messages:
1,245
80
0
Trophy Points:
165
#14
hm... down a 20m hole with no lights?

the bear is black.

unless the hole is in a glacier or something, in which case

the bear is blue.

Oct 23, 2008 IP
15. ### dx.revolutionBanned

Messages:
84
0
0
Trophy Points:
0
#15
what the hell are you guys talking about anyways

Oct 23, 2008 IP
16. ### ellie.beansPeon

Messages:
31
0
0
Trophy Points:
0
#16
Wow! I'm very much amazed! haha, very nice one. I didn't get it at first

Oct 23, 2008 IP
17. ### StrohNotable Member

Messages:
3,483
292
0
Trophy Points:
200
#17
1 KM south + 1KM west + 1KM north != Complete square.

Thus by proof of contradiction he did not land at his camp, unless his camp is a KM long at which who the hell would have that.

Diagonals are also longer than 1 KM thus your theory is false.

Also, if it even was remotely close, the bear would be either Brown or black.

Oct 23, 2008 IP
18. ### blackflagwtfPeon

Messages:
154
1
0
Trophy Points:
0
#18
Dave, nice work!

Oct 23, 2008 IP
19. ### beacon.seoWell-Known Member

Messages:
1,285
1
0
Trophy Points:
123
#19
nice work!!!

Oct 23, 2008 IP

Messages:
92