The topic is as follows: People travel from one place in the rain, the speed of rain is known, how much the speed of the travel person can make the rainstorm?
I saw this question when I participated in mathematical modeling last year, and I feel that my mouse took turtle - I didn't start. Since then, every time I encounter rain, especially forgetting the umbrella, I have to take this question. Later, on the Internet, I sat in the Internet. I learned on Google. I actually found several papers to answer this question. One of the assumptions, modeling, and deriving me more agree. The last conclusion of the paper is as follows:
Three principles of fleeing:
1 If the rain is called from the front or the side, then the faster you run.
2 If the rain is from the rear or side, and the speed is small, and when the person stands in the rain, the rear drowning is still not as much as any other part, so the faster, the faster it is.
3 If the rain is large, when the person stands in the rain, the rain to the rain is more than the other parts of the body, so that the back should not be raining to the best.
The paper address is as follows: http://vip.6to23.com/yunyan8/shu/file/sly.doc
