Problem P. 4850. (May 2016)
P. 4850. The mass of a small ball is 5 g, and its diameter is 4 cm. The ball is hit upward at a speed of \(\displaystyle 10~\frac{\rm m}{\rm s}\) in the air which has a temperature of \(\displaystyle 20~{}^\circ\)C and a pressure of 1 bar. Calculate with approximations the followings:
\(\displaystyle a)\) the height to which the ball ascends;
\(\displaystyle b)\) the time during which the ball arrives back to its initial position;
\(\displaystyle c)\) the speed of the ball when it gets back to its initial position.
(6 pont)
Deadline expired on 10 June 2016.
Statistics:
18 students sent a solution.  
6 points:  Asztalos Bogdán, Balogh Menyhért, Blum Balázs, Di Giovanni András, Elek Péter, Fehér 169 Szilveszter, Forrai Botond, Iván Balázs, Kasza Bence, Kovács Péter Tamás, Körmöczi Dávid, Marozsák Tóbiás , Olosz Adél, Sal Kristóf. 
5 points:  Páhoki Tamás, Szentivánszki Soma . 
4 points:  1 student. 
2 points:  1 student. 
