A bear accidentally fell into a hole. The hole was 5m high. It took 1 second for the bear to fall to the bottom of the hole.
Excuse me: What color is this bear? (It would be meaningless if everyone took the ferry. I hope everyone thinks for themselves)
Interesting reasoning
Replies (9)
This question requires a formula: the free fall formula \h=1/2gt^2\ h is the falling height\ g is the acceleration due to gravity\ t is the time of motion\ Substituting gives g, that is, the acceleration due to gravity 10M/S^2\ An acceleration due to gravity of 10 only exists at the two poles\ There are no bears at the South Pole\ So it must be the North Pole bear\ Therefore, the bear is white
I didn't learn that. This city is so empty, these memories are so fierce, these streets are bustling with traffic. Who can I embrace?
According to the problem, g is calculated as 9.8085, and the latitude of the trap's location is approximately 44 degrees. Based on the geographic distribution of bears, there are no bears in the Southern Hemisphere, so it can be determined that it is at 44 degrees north latitude;
Secondly, since the trap is designed for bears on the ground, it must be a terrestrial bear. Moreover, most terrestrial bears have poor vision and find it difficult to recognize traps, so they are likely to fall into them; Since the trap is 19.617 meters deep, the soil must be impact parent material, which makes it easier to dig. Although brown bears have a geographic distribution, they are mostly in high-altitude areas, are fierce, and have a high risk of being hunted. Their value is not as high as that of black bears, and generally, bear paws and bear bile are taken from black bears. Additionally, since the geographic distribution of black bears and brown bears basically does not overlap, it can be determined that the correct answer to this question is that the bear that fell into the trap is black.
Secondly, since the trap is designed for bears on the ground, it must be a terrestrial bear. Moreover, most terrestrial bears have poor vision and find it difficult to recognize traps, so they are likely to fall into them; Since the trap is 19.617 meters deep, the soil must be impact parent material, which makes it easier to dig. Although brown bears have a geographic distribution, they are mostly in high-altitude areas, are fierce, and have a high risk of being hunted. Their value is not as high as that of black bears, and generally, bear paws and bear bile are taken from black bears. Additionally, since the geographic distribution of black bears and brown bears basically does not overlap, it can be determined that the correct answer to this question is that the bear that fell into the trap is black.
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