determins the color of this bear!!!
April 26, 2007 12:22pm CST
A bear slips from a cliff.the height of the cliff is five hundred and fifty metres if the bear hits ground after exactly eleven seconds, can you determine the colour of the bear??? This question was asked at one of the IITs in India, and here is a scientific reason to go with finding the answer!!! I'll post the answer in a weeks time mean while try to work out the colour of the bear. PLS GIVE A REASON FOR THE COLOUR YOU CHOSE,WHO KNOWS... YOU MIGHT END UP RIGHT!!!
3 people like this
25 Aug 07
The color of this bear is definitely WHITE. Reason- Polar Bears are white in color. That is because, As per the given information The bear slips from a cliff, so it starts with an initial velocity of 0 meters per second. It takes 11seconds to strike the ground. The cliff is 550m tall. So according to the laws of motion- s=ut+1/2.a.t.t Here we are dealing with heights, so h replaces the parameter s in the equation. And u=o, where u is initial velocity. a, the acceleration parameter is replaced my "g" gravity parameter. therefore h=0.t + 1/2. g. t. t = h=1/2.g.t.t h, height of cliff = 550m t, time of the fall = 11 seconds 550 x 2 = g . 11 x 11 On solving a= 9.0909 m/sec^2 Generally the acceleration due to gravity g is 9.8m/sec^2 But at the poles the value shows a change because of the spherical shape of the earth. The gravity at poles in less than gravity in other parts of the earth. Hence apparently in this case, the bear has fallen from a cliff in a Polar Region. Only polar bears live in polar regions. Polar bears are white in color, so THIS BEAR IS WHITE IN COLOR.
30 Apr 07
the expected answer, of course is white but then i am quite sure the question is wrong and such accuracy is meaningless. infact a better one is - a bear walks 1 mile south, then 1 mile east and then 1 mile north and reaches the starting point. can you tell the colour of the bear?
26 Apr 07
It might not be anything, but then again, it could be something. If it fell in exactly 11 seconds, it was falling at a force slightly higher than Earth's usual gravitational pull (around 2% higher) This is possibly something related to it's location based on the Earth's curvature. I don't know enough about the Earth's curvature to say for sure, but at one of the poles, I believe that it would be low enough that Gravity could be marginally higher. So I am going to say white, because it must have been a polar bear.