Mathematical and Physical Journal
for High Schools
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# Problem P. 4808. (February 2016)

P. 4808. Luke and Sam are playing with a ball. First they throw the small ball vertically upwards, and they found that the greater the initial speed given the ball, the greater the height that it reaches.

Then they stand at some distance from each other and throw the ball to each other. Sam states that in this case it is also true that the greater the initial speed of the ball the higher it goes up. Luke doubts that this is always true.

Who is right?

(4 pont)

Deadline expired on March 10, 2016.

### Statistics:

 70 students sent a solution. 4 points: Ardai István Tamás, Asztalos Bogdán, Bartók Imre, Boros Máté, Bukor Benedek, Csire Roland, Csorba Benjámin, Debreczeni Tibor, Di Giovanni András, Édes Lili, Farkas Domonkos, Fekete Balázs Attila, Gémes Antal, Jakus Balázs István, Kardos Réka, Kasza Bence, Korecz Gábor, Kovács 526 Tamás, Máté Lilla, Nagy 555 Botond, Olosz Adél, Pázmán Előd, Póta Balázs, Sallai Krisztina, Tófalusi Ádám, Tomcsányi Gergely, Topa Lukács. 3 points: Bálint Áron, Bánki Bence, Csuha Boglárka, Kárpáti Kristóf, Kopitkó Tünde, Krasznai Anna, Mány Bence, Márkus Tamás, Matics Martin, Merkl Gergely, Molnár Mátyás, Nagy Kartal, Osváth Botond, Pőcze Andor, Radnai Bálint, Simon Dániel Gábor, Soós Benjámin, Virág Barnabás. 2 points: 9 students. 1 point: 8 students. 0 point: 8 students.

Problems in Physics of KöMaL, February 2016