Potential  energy

Elastic collisions

Energy skate park        

How to define potential really general 

Work and change of  energy: Potential or Kinetic 

Potential - Potential energy and Work 

Work - Kinetic energy and Potential energy 

Potential energy vs Force what is more fundamental 

Potential energy of a single body and Mutual potential energy 

What is a conservative force 

Potential energy for conservative force   ( Uf -Ui ) = - W conservative force          

Conservation of the mechanical energy       Emech = Ki +Ui = Kf +Uf     or      (Kf-Ki ) + (Uf-Ui) = 0

Gravitational potential energy         GPE = m*g*h

**Potential energy as mutual energy       W1,2  +    W2,1    =  -   {Change of the mutual potential energy}