KöMaL - Középiskolai Matematikai és Fizikai Lapok
Sign In
Sign Up
 Magyar
Information
Contest
Journal
Articles

 

Problem P. 4196. (November 2009)

P. 4196. A hard sheet making an angle of 45o with the horizontal is placed below a falling marble. The marble falls from a height of 2 metres and collides totally elastically with the hard sheet. Where must the sheet be placed in order to make

a) the horizontal distance covered by the marble until it hits the ground the greatest;

b) the time until the marble hits the ground the greatest?

(4 pont)

Deadline expired on 10 December 2009.


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

Megoldás. \(\displaystyle a)\) 1 méter magasra.

\(\displaystyle b)\) 1 méter magasra.


Statistics:

198 students sent a solution.
4 points:154 students.
3 points:9 students.
2 points:12 students.
1 point:4 students.
0 point:3 students.
Unfair, not evaluated:16 solutions.

Our web pages are supported by:   Ericsson   Cognex   Emberi Erőforrás Támogatáskezelő   Emberi Erőforrások Minisztériuma   Nemzeti Tehetség Program    
MTA Energiatudományi Kutatóközpont   MTA Wigner Fizikai Kutatóközpont     Nemzeti
Kulturális Alap   ELTE   Morgan Stanley