Решение задачи по физике раздел 21 пункт 40 механика

40. The body is uniformly accelerated moving down an inclined plane, and the dependence of distance traveled by the time given by the equation s = 2t + 1,6t2. Find k friction body on a plane when the elevation angle to the horizontal plane is 30 °.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)