The management of the Dormitories and Refectories decided to spend money meaningfully, so they built a slide from the roof of the "building A" of the 17th November dormitories directly to the door of the MFF's Impakt pavilion. The two buildings are 430 m apart as the crow flies, and their height difference is 59 m. What is the coefficient of friction of the slide if a student weighing 60 kg has thrown himself down it with a velocity v₀ = 8.5 m·s⁻¹ and just stops at the end of it? Assume that the slide is an inclined plane.
Eliška was late for a lecture.