Why is Newton's 1st Law also known as the Law of Inertia?

Law of Inertia it's also called Newton's first law of motion simply stated it means an object in motion tends to stay in motion or an object at rest tends to stay at rest unless the object is acted upon by an unbalanced force. Hope this helped!

i think it is true since you can test the answer and can use observations to complete it.

the dissolution of polymer can be thermodynamically described in 2 steps.