Mathematical and Physical Journal
for High Schools
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Problem P. 3853. (December 2005)

P. 3853. Find the velocity of the object if its increase of mass is 10%.

a) By what percent will the length of the object decrease in the direction of the motion?

b) If its rest energy is W0, what is its kinetic energy?

(4 pont)

Deadline expired on January 11, 2006.


Statistics:

141 students sent a solution.
4 points:96 students.
3 points:12 students.
2 points:25 students.
1 point:5 students.
0 point:1 student.
Unfair, not evaluated:2 solutions.

Problems in Physics of KöMaL, December 2005