Mechanics and Motion Physics studies many types of motion and forces .Motion is one of the key topics in physics. Everything in the universe moves. It might only be a small amount of movement and very very slow, but movement does happen. Dont forget that even if you appear to be standing still, the Earth is moving around the Sun, and the Sun is moving around our galaxy. The movement never stops. Motion is one part of what physicists call mechanics. Over the years, scientists have discovered several rules or laws that explain motion and the causes of changes in motion. There are also special laws when you reach the speed of light or when physicists look at very small things like atoms. Speed it Up, Slow it Down The physics of motion is all about forces. Forces need to act upon an object to get it moving, or to change its motion. Changes in motion wont just happen on their own. So how is all of this motion measured? Physicists use some basic terms when they look at motion. How fast an object moves, its speed or Velocity, can be influenced by forces. (Note: Even though the terms speed and velocity are often used at the same time, they actually have different meanings.) In order to really understand motion, you have to think about forces, acceleration, energy, work, and mass. These are all a part of mechanics.
Posted on: Wed, 30 Oct 2013 03:52:05 +0000
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