As the cars of a rollercoaster race down a hill, energy transformations take place. Which of the following is true?

a Kinetic energy is stored in the cars as they move downhill and is released when they move uphill.
b Some of the potential energy is transformed to kinetic energy and other forms of energy.
c Some of the energy is destroyed as the car slows down and comes to a stop.
d The total energy doesn't change; the kinetic energy of the cars is equal to the potential energy of the cars.

A should be the correct answer

Explanation:

the cars should be gaining that stored kinetic energy and they release it whenever something is holding them back

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!