Thermal Bottom

What kind of energy does the roller coaster carts have at the bottom of the loops?

I know is kinetic energy, but what kinetic energy is; the types of kinetic energy are thermal energy, sound energy and electrical energy.
Please dont say emotional energy because my teacher dont teach me yet about emotional energy, I only know about thermal, sound and eletrical energy. THX

Types of kinetic energy: heat, light, motion, and sound

Motion.98% some small portion is in the form of heat (wheels and rail) and sound (between wheels and rail)

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