Vectors #1

It may be a little hard to see but this is a picture of the car parade that was taken after the Kahuku versus Kamehameha varsity football game. It happened to be a majority of the seniors that were driving to the party house. The next chapter were studying vectors, which is the study of equal movement. This picture shows a perfect example of vectors in the real world because they have both magnitude and direction. All the cars have similar magnitude, or muchness, because they are all cars but some cars may have bigger magnitudes than others. When leaving the stadium all the cars in the parade were heading in the same direction. Although some of the cars may be moving at different velocities they have equivalent directions.

Kinematics #4

In the game of football everyone has a position either on offense or defense. If its from playing offensive line or receiver or quarterback, everyone has a job that their responsible for. During a typical football game players run on and off the field. Their total displacement from getting off the bus to getting back on is zero. When on the field players also show other signs of kinematics. For example, as an offensive lineman when we break from the huddle we run to the line and get down in our stance. Since we are at rest our velocity at this point is zero. But when the ball is snapped in a matter of seconds our velocity and acceleration increases until contact with a defensive player. When making contact our velocity and acceleration decrease but never hit zero. Once again physics has been proven to be actively involved in football.

Late Labor Day Blog

In chapter 2 we studied further into kinematics. We learned more about velocity, acceleration, and speed. I will be talking about each one in this example of kinematics on the football field. In this picture Kanekoa, our excellent kicker, is punting the ball away on a failed 3rd down conversion. As you can see the ball is being kicked up. Since gravity is applicable in our everyday life the football is bound to come down. If the punt returner catches the ball at the same height at which the ball was punted then the football should have around the same speed (if we ignored other variables such as wind, ball spin, etc.). The footballs velocity changes because the football changes direction in mid-air. This is due to the acceleration of the football which goes from slow to fast, then reaches the peak where the velocity becomes 0, then progresses from slow back to fast. This just shows once again that kinematics is applicable in football as well as our everyday life.

Average Speed

Back in the day cars like these weren't that fast. All they were used for was from getting from point A to point B. But I'd like to use this car as an example of kinematics for this chapter. This car was built as a standard car. If you didn't know standard cars need to reach a certain speed before changing gears and reaching top speed. Thus meaning that standard cars stay at the same speed for a longer period of time depending of driving conditions Since learning the new equation distance equals average velocity times the time, I realized that you can't just take the speeds average but you need to take in consideration how long the car was traveling at that speed. This is because the times spent at certain speeds plays a vital role in the average velocity of the car during its travel. Using this equation, I think that this is how scientists and engineers invented automatic cars to reach higher speeds in a faster time.