Assertion: roller coaster's energy | /r/HasProperty | created
Facets:
Source sentences:
text: That is, energy is neither created nor destroyed; there is a balance between energy inputs to the system (raising the train to the top of the initial hill) and energy outputs from the system (the motion of the train, its sound, frictional heating of moving parts, flexing and bending of the track structure, and so on).
text: When the roller coaster moves downwards, kinetic energy is generated.