Physics
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What is Physics?
Physics is the study of the laws of nature and what everything has to do with everything else. Nearly every other part of science relates to physics. It focuses on motion and measuring motion.
Examples of motion
Acceleration
A measure of how much velocity changes in a given amount of time. In order to accelerate, an object's speed, direction or both must change. The faster the velocity change, the greater the acceleration. The formula is V2-V1/T when V2 is the final V and V1 is the original V.
Force
Force is a push or pull on an object. It gives energy onto an object causing it to accelerate in a variety of ways. It is measured in Newtons. Balanced forces cancel out while unbalanced cause an acceleration in one direction. The net force is the overall combined force acting on an object.
Velocity/Speed
Speed and velocity both represent the distance traveled by an object divided by the time it took. The difference is that velocity includes a direction. In other words, speed is a scalar quantity while velocity is a vector quantity.
Isaac Newton
Isaac Newton was a mathematician and physicist in the 1600's. He wrote The Principia and is well known for his work in gravity and optics. He is most famous for his laws of motion.
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