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What is the length of the path they have traveled at the moment they reach each other?

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Consider four (dimensionless) flies, two males and two females. They are situated at the corners of one square meter. Every fly tries to reach the male/female fly in front of her/him. Their initial situation is visualized in the picture. Since the flies are flying towards another, they will meet each other at a certain time in the center of the square.

posted Jun 26, 2014 by Vrije Mani Upadhyay

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