If you wish to clarify the concept for your students, you might prefer to help them âfeelâ what a âunit of analysisâ is, rather than give them a rhetorical explanation. As hinted by Simone de Beauvoir, in âThe Ethics of Ambiguityâ, the Bible offers a good example!
exâ¢erâ¢tion. 1. vigorous action or effort. 2. an effort: a great exertion to help others. 3. exercise, as of power or faculties. 4. an instance of this.
Inertia is a scalar, something that only has a magnitude, and is defined as the resistance of an object to its state of motion, which also includes the state of rest. An object's mass is a measure of its inertia. Momentum is a vector, something that has a magnitude and direction.