What does the term “basic unit of matter” refer to? select one of the options below as your
a. atoms
b. elements
c. molecules

Atom is the most basic unit of matter. They are the general term used to describe pieces of matter. But a different kind of atom makes up an element.  A combination of atom of different elements creates a molecule. For example, you have water; it has a chemical formula of H2O. If you separate H from O, you have two atoms. Two atoms for hydrogen and one atom for oxygen. However, they are of different elements. And when you combine them to form H2O, you create a molecule. The answer is A.

That depends on what kind of environ meant it is in  in space it has the same force that was applied when the velocity was gained