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,
Dalian Boyoung F.C. Dalian Boyoung F.C. Dalian Chanjoy Football Club () is a professional Chinese football club that currently participates in the China League Two. The team is based in Dalian, Liaoning and their home stadium is the 30,775 capacity Jinzhou Stadium. It used to be called Dalian Boyang（大连博阳）. Dalian Chanjoy F.C. was established on 20 August 2015. In January 2016, Dalian Boyang Construction Engineering Co., Ltd. officially bought the Dalian Tornado and changed their name as Dalian Boyang. However, Dalian Boyang failed to enter China League Two due to disadvantageous ranking order and played in the 2016 China Amateur Football League. They