a truck is parked at the bottom of a hill and moves from the bottom of a hill and parks at the top compared to when it was parked at the bottom of the hill. it's new position the truck now has, please answer this question​

mark him as !

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.