Monday, October 20, 2008

just like glasses



Physics is very fun and I really enjoy everything we do in class. The concepts relate to real life and things all around me, which makes it easier to understand. It is cool to see how things work and why things happen the way they do sometimes. Just a simple thing like gravity is very important it everyday life. I like the labs a lot because it further explains what we are learning about. I also like the demonstrations like the one where the two ball berrings landed at the same time even though one was launched horizontally and one was just dropped. My anxiety about this class is not being able to understand a certain concept or section and getting totally lost. Other than that I am excited about the other things we will get to do in this class. I think I have been trying hard in this class. I do all my homework and I study for tests and quizzes. I think I need to ask for help more when I don't understand something so that I will be able to get it.
This course is like a pair of glasses for me. Before this, I didn't really realize that many things around me were as facinating as they are. But now things that seemed just ordinary and everyday things are a lot more interesting. There is actually a reason to why a ball moves when I kick it. When I hit someone who is bigger then me, I bounce the other way because of Newton's third law. Glasses make things a lot more clear and helps people to notice what they didn't before. That is how physics is for me. I am able to see what I think is simple and put reasoning behind it and enjoy it more.

Sunday, October 5, 2008

distance vs displacement



This weekend my whole family from my dad's side went to Maui. It was my Aunty Renee's birthday so the our parents planned to go and celebrate it on another island. It was really fun because all of my cousins were there and there were four pools with slides, caves, pool-vollyball and pool-basketball. We left on Friday after school and came back on Sunday. I noticed that there was physics in our trip that shows the difference between distance and displacement. Distance just measures the amount traveled. Displacement measures the amount traveled and in what direction. Displacement is the net change in position. The total distance and displacement that our family flew on the plane were different. The distance from Oahu to Maui is around 116.47 miles. So the total distance that we traveled on the airplane was around 232.94 miles, which is to and from Maui. But our displacement was zero. Even though we traveled 116.47 miles in one direction, we traveled that same distance in the opposite direction, making our total displacement zero. Our trip to Maui showed the difference between distance and displacement and how they measue different things.