write a 2 page essay on motion and get 99 points
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Motion that results in a change of location is said to be translational. This category may seem ridiculous at first as motion implies a change in location, but an object can be moving and yet not go anywhere. I get up in the morning and go to work (an obvious change in location), but by evening I'm back at home — back in the very same bed where I started the day. Is this translational motion? Well, it depends. If the problem at hand is to determine how far I travel in a day, then there are two possible answers: either I've gone to work and back (22 km each way for a total of 44 km) or I've gone nowhere (22 km each way for a total of 0 km). The first answer invokes translational motion while the second invokes oscillatory motion.
Oscillatory motion
Motion that is repetitive and fluctuates between two locations is said to be oscillatory. In the previous example of going from home to work to home to work I am moving, but in the end I haven't gone anywhere. This second type of motion is seen in pendulums (like those found in grandfather clocks or Big Ben), vibrating strings (a guitar string moves but goes nowhere), and drawers (open, close, open, close — all that motion and nothing to show for it). Oscillatory motion is interesting in that it often takes a fixed amount of time for an oscillation to occur. This kind of motion is said to be periodic and the time for one complete oscillation (or one cycle) is called a period. Periodic motion is important in the study of sound, light, and other waves. Large chunks of physics are devoted to this kind repetitive motion. Doing the same thing over and over and going nowhere is pretty important. Which brings us to our next type of motion.
Rotational motion
Motion that occurs when an object spins is said to be rotational. The earth is in a constant state of motion, but where does that motion take it? Every twenty-four hours it makes one complete rotation about its axis. (Actually, it's a bit less than that, but let's not get bogged down in details.) The sun does the same thing, but in about twenty-four days. So do all the planets, asteroids, and comets; each with its own period. (Note that rotational motion too is often periodic.) On a more mundane level, boccie balls, phonograph records, and wheels also rotate. That should be enough examples to keep us busy for a while.
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Physics has through time inspired the minds of science into different ideas and theories, Beginning with the work of Aristotle, the Greek Philosopher, his theories and assumptions about force and motion are widely studied and understood through time. Born in 384 - 322 B.C.E. Aristotle joined Plato 's Academy at age of 18 and left at age of 36. He was the one of the first great scientists that contributed to the theories of force and motion. He first defined motion as the actuality of a potentiality, and also wrote about a series of studies that he made through his life, such as physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theater, music, rhetoric, linguistics, p... [tags: Classical mechanics, Newton's laws of motion]