Mathematical and Physical Journal
for High Schools
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# Problem P. 4185. (October 2009)

P. 4185. A bird can fly in the air at a constant speed v. There is a wind of speed v1 blowing from the North. Into what direction should the bird fly in order to move in the East--West direction? What is its speed with respect to the Earth? Data: , .

(3 pont)

Deadline expired on November 10, 2009.

Sorry, the solution is available only in Hungarian. Google translation

Megoldás. Az északi irányhoz képest 25,8 fokkal nyugatra repülő madár a Földhöz viszonyítva 17,4 $\displaystyle \frac{\rm km}{\rm h}$ sebességgel fog mozogni nyugat felé.

### Statistics:

 244 students sent a solution. 3 points: 155 students. 2 points: 56 students. 1 point: 7 students. 0 point: 17 students. Unfair, not evaluated: 9 solutions.

Problems in Physics of KöMaL, October 2009