Define a system as an object or a group of interacting objects.
Explain that changes in the way energy is stored occur whenever a system undergoes a change.
Describe the specific changes involved in the way energy is stored for common situations, such as an object projected upwards, a moving object hitting an obstacle, an object accelerated by a constant force, a vehicle slowing down, or bringing water to a boil in an electric kettle.
Calculate the changes in energy involved when a system is altered through heating, work done by forces, or work done when a current flows.
Use calculations to demonstrate on a common scale how the overall energy within a system is redistributed when that system is subjected to change.
