Kristina demonstrates a toy for her younger brother. the steps to operate the toy are listed below. step 1. push the toy down. step 2. a spring compresses. step 3. release the toy. step 4. the toy jumps into the air. which best describes step 4? elastic potential energy changes to gravitational potential energy. gravitational potential energy changes to elastic potential energy. kristina does work to increase the gravitational potential energy. kristina does work to increase the elastic potential energy.

Step 1. Push the toy down => the toy has neither gravitational potential energy nor elastic potential anergy

 Step 2. A spring compresses => Kristina did work to increase the elastic potential energy of the toy.

The toy accumulated elastic potential energy given that the spring is compressed (away from its equilibrium position).

Step 3. Release the toy.

Step 4. The toy jumps into the air =>  Elastic potential energy changes to gravitational potential energy.

The energy accumulated by the compression of the spring is released and the toy gains gravitational potential energy.

elastic potential enery changes to gravitational potential energy.

Ido not know at all