Tuesday, December 13, 2011

What Did You Learn This Semester??


In the beginning of the semester, I was excited about physics because I knew it could explain motion at a science point of view. It would also be relatable to everyday life and would allow me to understand why things happen. Once we started classes, Mr. Blake got me excited about learning because he made the content interesting with his various scenarios and character voices. My favorite unit this semester was unit six, also known as the energy chapter. I thought it was fascinating to be able to calculate how much energy an object has. Because it is something that we cannot physically see, it is still possible to determine the conserved energy whether it is calculated through potential energy of a spring (PEs=½ kd^2), gravitational potential energy (PEg=mgh), or kinetic energy (KE=½mv^2). During this semester, ultimately helped me realize how much fun and interesting science can be when you have a teacher that is passionate about what he teaches and the effect it has on his students. Although my grades weren’t as high as I expected them to be, I’m motivated for next quarter’s concepts and challenges that it will bring. 

Energy


Potential and Kinetic Energy are the two types of energy that can be described in physics. All objects, whether they’re inadament or adamant, they always contain energy. Energy is neither created nor destroyed. It simply is recycled and stays in the system. This means that when an object is at rest, energy will still be contained within the object even though it’s not moving. An example of this is a ball on the top of a ramp. Although its velocity is zero, energy is shown when it moves throughout the obstacle course.