Mechanical energy nonconservative forces, like frictional forces, will be present, but often they are of negligible values and the mechanical energy's being constant can therefore be a useful approximation. In elastic collisions, the mechanical energy is conserved but in inelastic collisions, some mechanical energy is converted into heat. The equivalence between lost mechanical energy (dissipation) and an increase in temperature was discovered by James Prescott Joule. Many devices are used to convert mechanical energy to or from other forms of energy, e.g. an electric motor converts electrical energy to mechanical energy, an electric generator converts mechanical energy into electrical energy and a
Dalian Tornado F.C. Dalian Tornado F.C. Dalian Tornado Football Club () is an amateur Chinese football club that currently participates in the China Amateur Football League. The team is based in Dalian, Liaoning. Dalian Tornado was established in 2004. Dalian Tornado first entered the final stage of China Amateur Football League in 2011 and won champions. They became a fixture of the Amateur Football League final as well as the Chinese FA Cup. After a stellar 2015 season, The club had to sell their Chinese FA registration and entire first-team to Dalian Boyoung F.C.. The following 2017 league campaign saw the club start