Mechanical energy swing because of the work done by the pendulum to oppose these non-conservative forces. That the loss of mechanical energy in a system always resulted in an increase of the system's temperature has been known for a long time, but it was the amateur physicist James Prescott Joule who first experimentally demonstrated how a certain amount of work done against friction resulted in a definite quantity of heat which should be conceived as the random motions of the particles that comprise matter. This equivalence between mechanical energy and heat is especially important when considering colliding objects. In an elastic collision,
2015 Dalian Aerbin F.C. season to gain full control of the team, before officially changed the team name to Dalian Yifang F.C.() by the end of the season. 2015 Dalian Aerbin F.C. season The 2015 Dalian Aerbin F.C. season is the sixth season in the club's history, and the first season after relegation from the Chinese Super League. When they were relegated from the Super League, Aerbin sold many starting players trying to minimize their expenses. Aerbin signed Swedish manager Mikael Stahre before the season started. However, financial issue was still a tough problem for the team. As the performance was below expectation, another back