Question

As a roller coaster moves down a hill, potential
energy is converted into kinetic energy, thermal
energy, and sound energy. What is true about
the total energy of this system?
A. Energy is gained (created) as the roller
coaster moves.
B. Energy is lost (destroyed) as the roller
coaster moves.
C. The total energy remains the same as the
roller coaster moves.
D. The total energy constantly changes as
the roller coaster moves.

Answer 1

Answer:

C. The total energy remains the same as the rollercoaster moves

Explanation:

Energy is not created or destroyed it just transfers, so the amount of energy that the roller coaster has remains the same.

hope this helps!

Answer 2

As a roller coaster moves down the hill, potential energy is converted into kinetic energy, thermal energy, and sound energy. The total energy of the system remains constant; thus, the option “C” is correct.

What is the law of conservation of energy?

“Energy can neither be created nor be destroyed” the statement given by Einstein forms the 1st law of thermodynamics. Energy remains constant but it changes its forms this is also called law of conservation of energy

In the following case when the roller coaster is at a certain height it contains potential energy, while coming down the potential energy gets converted into kinetic, thermal, sound energy

hence, the total energy of the system remains the same.

PE=KE+TE+SE  

Hence, the correct option is “C”

Learn more about law of conservation of energy.

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