Unit 2- Kinematics: The Study of Motion

This photo represents unit 2 because in unit 2 we learned all about motion, and in this photo my friend is walking, and in motion. We learned about how all motion is relative and that motion depends on the object and what it is relative to. For example, my friend in this photo appears to be walking fast relative to me, who is standing still. Relative to a person who was walking faster than her, she would be considered slow.
 Scalars are a number that has magnitude. Ex. My friend is moving 8 meters.
Vectors have magnitude and direction. Ex. My friend's vector is that she is moving 8 meters towards the street. We learned about how vectors have displacement. Displacement is different from distance. Distance is the total length of the actual path. Her distance would be 16 meters. Displacement is change in position. For example my friend started where I was standing, and walked to where she is standing in the picture which is 8 meters away. If she came back to exactly where she started her displacement would be 0, because she would be going back to exactly where she started. To the place she is in the photo is positive  coming back to where she started is negative, so the 8 m cancel each other out and result in 0.
Instantaneous Speed- the speed you are going at any given distance. My friends speed could be 10 mph, but its the speed she is traveling at right then.
Velocity- average speed, speed with direction. I can find my friends average speed by using the formula V= distance/ time.

Unit 1

In Unit we learned about accuracy, precision, different types of graphs, pendulums, scientific notation, and dimensional analysis.

Accuracy- the closeness of a measurement to the actual value

Precision-the consistency of measurements repeatability of results
The picture of the bull eyes represent accuracy and precision. The first bulls eye shows high accuracy and high precision because the darts hit the middle and hit the middle a bunch of times. The middle bulls eye shows low accuracy and low precision because the darts didn't hit the middle and didn't hit the same spot. The last bulls eye shows low accuracy because the darts didn't hit the middle, but high precision because they hit the same spot every time.
The second picture shows a bunch of different graphs which were major in our learning these past two days.
The first graph shows how the two variables have no relationship. As x increases, y remains the same.
The second graph shows how y is directly proportional to x. As x increases, y increases proportionally.
The third graph shows how y is inversely proportional to x. As x increases, y decreases
The fourth graph shows how y is proportional to the square of x.
The fifth graph shows how the square of y is proportional to x. (square root)

We also learned about dependent and independent variables.
 X is usually the independent variable and Y is usually the dependent variable. Y depends on X.

Accuracy, precision and the different graphs have been very major in our few days of learning of physics.

• My name is Candace Chan. I am a Junior and I live in Diamond Head. I was born in Houston, Texas and after 6 months moved to Hawaii.  I've been going to Punahou since I was in kindergarten. I have a older brother, who graduated Punahou two years ago. He is now a sophomore attending Southern Methodist University in Texas. I really enjoy going to the beach, being in the sun, running, swimming, and taking pictures. 

•Freshmen year I took biology during the summer. I struggled with the long hours of bio, but over time it became a really fun! Sophomore year I took chemistry, which surprisingly turned out to be one of my favorite subjects, although stressed me out a lot and I disliked because of the long one and a half hours classes. I thought chemistry was really interesting and didn't pretty well in the course. 

•The math course I will be taking next year will be Alg 2/ Trig (regular). 

•I am very interested in science, and exploring the option of becoming a doctor when I am older. I am taking this course to better my understanding of science and see if I enjoy physics which will help me to decide my career choice. I hope to obtain some understanding of what type of science I like the best and this information will help me in the future for college and career. I also wanted to obtain a easier schedule for next year, because physics is a year course I can get it off my plate and hopefully have a cruiser schedule next year. 

•The story behind this picture is that these are my two best friends. We do everything together and I wouldn't be who I am without them. This picture was taken recently at the Sheraton Waikiki. This day was a super fun day for all of us, we went shopping, ate, went into the pool and the beach. This pool is the infinity pool and it's super nice. We stayed there for a while and watched the sunset. This photo represents me because it shows how I love hanging out with my friends, and I love being in the water, at the beach and outside. It shows me in a swimsuit, which is what I usually am in during the summer. It also shows Diamond Head in the back, which is where I live.