Rather than describing the increased kinetic energy of the stone to the work of gravity, we now (when using potential energy rather than work-energy) say that the increased kinetic energy comes from the of the energy. a) work / potentialb) force / kineticc) change / potential

The increased kinetic energy of the stone comes from the change of the potential energy

Explanation:

Potential energy depends on mass, gravitational force, and height.When the stone is at rest it has potential energy.When the stone falls or is subjected to the work of gravity its potential energy is changed to kinetic energy. The total energy of the object remains constant that is the decrease of the potential energy is an equal increase in the kinetic energy.Hence, the increased kinetic energy of the stone comes from the change of the potential energy.

Only one reactant yields 2 or more products. meaning you will only have 1 product and it will break down into 2 or more products. eg. h2o -> h2 + o2