文档介绍：Chap1-2 Describing Motion with Diagrams
1 Introduction to Diagrams
Throughout the course, there will be a persistent appeal to your ability
to represent physical concepts in a visual manner. You will quickly notice
that this effort to provide visual representation of physical concepts
permeates class discussions and activities. From animations to laser disc
segments to demonstrations to whiteboard diagrams to these Physics
Classroom pages, you will be confronted with graphics and visuals. The
world which we are studying in this course is the physical world - a world
which we can see. And if we can see it, we certainly ought to visualize
it. And if we seek to understand it, then that understanding ought to
involve visual representations. So as you proceed on your pursuit of
physics knowledge, always be mindful of your ability (or lack of ability)
to visually represent it. Monitor your study and learning habits, asking
if your knowledge has e abstracted to a series of vocabulary words
which have (at least in your own mind) no relation to the physical world
which it seeks to describe or if your knowledge is intimately tied to that
physical world as demonstrated by your visual images.
Like the study of all of physics, our study of 1-dimensional kinematics
will be concerned with the multiple means by which the motion of object