Waiting to be released / jump into action. Jeff lies asleep dreaming of butterflies.
Jeff is called by his mum. His breakfast is ready and he jumps into action, running down the stairs to the kitchen.
ANOTHER EXAMPLE
POTENTIAL ENERGY
The football is ‘stationary’, perched on the top of the wall. It is not moving. It’s weight combined with gravity, means that it has potential energy.
KINETIC ENERGY
A breeze, tips the ball off the wall, this is now an example of kinetic energy, as it falls to the ground.
Jeff, in his bathtub on wheels, is sat at the top of a hill, not moving - potential energy as gravity plus Jeff's weight, could start the tub moving.
When the bathtub starts to freewheel down the hill, it becomes kinetic energy.
