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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

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