Problem P. 4738. (May 2015)
P. 4738. At what minimum speed should we have to go next to a picket fence, in order to sense the light, passing the fence perpendicularly, continuous? The width of the pickets is 5 cm and the width of the gaps between them is 10 cm. The human eye cannot distinguish between images which lasts less than one-fifteenth of a second.
Deadline expired on June 10, 2015.
28 students sent a solution. 3 points: Ardai István Tamás, Bálint Áron, Bartók Imre, Berta Dénes, Csorba Benjámin, Danyi András, Horváth Péter, Kálmán Bence, Kopitkó Tünde, Kormányos Hanna Rebeka, Körmöczi Dávid, Nagy 555 Botond, Németh András, Páhoki Tamás, Simon Dániel Gábor, Szépfalvi Bálint, Tanner Martin, Tófalusi Ádám, Varga-Umbrich Eszter, Wesniczky Albert. 0 point: 8 students.