Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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Problem P. 4186. (October 2009)

P. 4186. When someone travels with the underground is it easier to walk facing towards the engine or facing backwards the engine when the train starts to move. Why?

(4 pont)

Deadline expired on November 10, 2009.


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

Megoldás. A metrókocsi gyorsuló koordináta-rendszerében menetiránnyal ellentétesen fellépő ,,tehetetlenségi erő'' miatt menetiránnyal szemben könnyebb haladni, mint az ellenkező irányban.


Statistics:

220 students sent a solution.
4 points:198 students.
3 points:4 students.
2 points:5 students.
0 point:4 students.
Unfair, not evaluated:9 solutions.

Problems in Physics of KöMaL, October 2009