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A motion diagram represents the motion of an object by displaying its location at various equally spaced times on the same diagram. Motion diagrams are a pictorial description of an object's motion. It shows an object's position and velocity initially and presents several spots in the center of the diagram. These spots reveal whether or not the object has accelerated or decelerated. .〔Bonham, Scott. (unknown year). Motion diagrams. Manuscript submitted for publication, Department of Physics, Western Kentucky University, Bowling Green, KY. Retrieved from http://webphysics.davidson.edu/physlet_resources/western_kentucky/MotionDiagrams.html 〕 For simplicity, the object is represented by a simple shape, such as a filled circle. It contains information about object positions at particular time instances and therefore a motion diagram is more informative than a path. ==Viewing Motion Diagrams== One of the major usages of motion diagrams is to present film through a series of frames taken by a camera. Viewing an object on a motion diagram allows one to determine if an object is at a constant rest, speeding up or slowing down. As the frames are taken, it can be assumed that an object is at a constant rest if it occupies the same position over time. It can be assumed that an object is speeding up if there is a visible increase in the space between objects as time passes.〔Knight, R. (2008). Physics for scientists and engineers: a strategic approach. San Francisco,CA: Pearson Education Inc.〕 An object can be assumed to be slowing down if there is a visible decrease in the space between objects as time passes.〔Knight, R. (2008). Physics for scientists and engineers: a strategic approach. San Francisco,CA: Pearson Education Inc.〕 The objects on the frame come very close together. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Motion diagram」の詳細全文を読む スポンサード リンク
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