(Kelly sends a Slinky down some blocks.)  At rest, a Slinky has potential energy, which is converted to this type of energy as it makes its descent
[PAR] The Slinky, whose design has been modified only once to crimp the ends for ... 
started down the stairs and gravity affects it, the potential energy is converted to 
the ... As the slinky moves down the steps, energy is transferred along its length 
in a ... What are all the factors that might make one slinky move faster than 
another?