You do realize that Newtonian physics has been disproven, or shown to be not applicable to the world we live in, or only applicable to motion on the earth . . . depends how you want to look at it, the point is his rules aren't universally applicable.
There is so much that ISN'T understood about evolution and many other theories (the Big Bang theory gets revised every couple months, seems like) that it is important to teach what is known, what is theorized, what is hypothesized, and the difference between them, and how to approach them critically in a scientific manner.