Describe the energy transformations when a child hops

Step-by-step solution

Step 1 of 2:

We have always to remember the law which applies to a problem we are solving. In this case, we can use the law of conservation of energy which applies for all isolated systems:

The total energy of an isolated system is always constant. Energy can neither be created nor destroyed, but simply changes from one form to the other.

We have also to remember and understand the definitions:

Potential energy: It is the energy possessed by a body by virtue of its position or configuration.

Kinetic energy: It is the energy possessed by a body by virtue of its motion. Every time a body moves, we say it has kinetic energy.