Solution of the D1 12. The skier of mass m = 70 kg falls without an initial speed of the slope, forming an angle a = 30 ° to the horizontal, not pushing sticks. L = length of the descent of 100 m, the coefficient of friction of the ski snow f = 0,1. The strength of the air resistance is proportional to the square of the speed R = 0,4v2. Determine the speed of the skier at the end of the descent.

Right after the payment you receive a link to the archive with the solution of the problem in theoretical mechanics D1 B12 (condition 12) in the test book "theoretical mechanics" Dievskaya VA Malyshev IA 2009 for university students.
The decision is decorated in a format word (typed or hand-written decision in a Word), packed to the archive zip (open on any PC).

After checking the solutions I would be very grateful if you leave your positive feedback.