Решение задачи по физике раздел 52 пункт 9 механика

9. Two relativistic particles moving in the laboratory frame at speeds υ1 = 0.6 s and υ2 = 0,9s along the same line. Determine their relative speed u21 in two cases:
1) the particles are moving in the same direction;
2) the particles move in opposite directions.

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