KöMaL - Mathematical and Physical Journal for Secondary Schools
Hungarian version Information Contest Journal Articles News
Conditions
Entry form to the contest
Problems and solutions
Results of the competition
Problems of the previous years

 

 

Order KöMaL!

tehetseg.hu

Ericsson

Google

Emberi Erőforrások Minisztériuma

Emberi Erőforrás Támogatáskezelő

Oktatáskutató és Fejlesztő Intézet

ELTE

Competitions Portal

P. 3995. A 2 kg lead ball and a big medicine ball of mass 2 kg are dropped from the same height. The lead ball reaches the ground in 2 seconds and the medicine ball hits the ground with a speed of 10 m/s.

Calculate the work done on the medicine ball by the air drag.

(4 points)

Deadline expired on 11 October 2007.


Statistics on problem P. 3995.
316 students sent a solution.
9 points:Kardos Ádám.
4 points:50 students.
3 points:202 students.
2 points:11 students.
1 point:16 students.
0 point:10 students.
Unfair, not evaluated:25 solutions.
Unfair, not evaluated:1 solution.


  • Problems in Physics of KöMaL, September 2007

  • Our web pages are supported by: Ericsson   Google   SzerencsejátĂ©k Zrt.   Emberi ErĹ‘források MinisztĂ©riuma   Emberi ErĹ‘forrás TámogatáskezelĹ‘   OktatáskutatĂł Ă©s FejlesztĹ‘ IntĂ©zet   ELTE   Nemzeti TehetsĂ©g Program