Why don’t roller coaster cars return to the
same height at which they started?
a. they are broken.
b. they are safer this way.
c. they transfer some of their energy into thermal energy and sound energy.

part c is the answer because other things like part a and b arent studied they are other problems

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

what does the table look like