Motion is a general property of matter. There is no rest in the absolute sense. An object at rest with reference to the earth 's surface is in rapid motion with reference to the earth's axis of rotation just as a person may be at rest in a Pullman car and at the same time be in rapid motion with reference to the ground. All divisions of matter, - masses, molecules, atoms, protons, and electrons are moving relatively all of the time.
©1930 by Iowa State Teachers College
Science Bulletin: Vol. 2:
5, Article 3.
Available at: https://scholarworks.uni.edu/science_bulletin/vol2/iss5/3