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Casey12

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About Casey12

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    Junior Member
  • Birthday 04/19/1995

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  1. Casey12

    How Airplanes Fly

    So interesting!!! I always knew you loved volleyball! :-)
  2. Casey12

    Physics of Playing Guitar

    When one plays a guitar, it is so important to remember all the physics behind it. Waves have a lot to do with the sound we hear from them. For example, without a large amplitude, it would not be heard. And when one changes notes, it changes the frequency that is heard. Because the wave is longitudinal, it needs a medium to travel through which is why in a vacuum you would not be able to hear someome playing. The pulses vibrate parallel to the wave because in a longitudinal wave thats their path. Also, playing the guitar has a lot to do with mechanical energy as one strums the strings. Without the physical motion of the player, there would be no sound. Overtones are a cool thing string instruments have that have a lot to di with waves, which is another physics point! Next time one picks up a guitar remember all the physics behind it!!!
  3. Casey12

    the physics of a car

    wow you are so smart
  4. Casey12

    Physics of Working Out

    Working out is a vital part of a healthty lifestyle and I always wondered how much physics is involved in it. Working out takes a lot of work because work equals force times distance. The amount of work I put in is based on my force and distance. For example, when I lift weights, the heavier the weight and the higher distance I lift, the more work I put in. Also, an important part of working out it doing cardio. I like to run fast so I need my velocity to increase. Average velocity equals distance divided by time, so when I am on the treadmill I try to run two miles as fast as I can so I have a high velocity. Overall, working out has a lot of physics involved!
  5. Casey12

    Physics of Tubing

    Now that the nice weather is here I thought it would be appropraite to talk about my favorite summer activity, tubing on the lake! The best part of tubing is when your holding on for dear life and are going so fast the water splashes everywhere and then you take a big jump off a huge wave! But beyond just having fun there is a lot of physics involved. First, momentum is a huge part of tubing. Momentum is the product of an objects mass (me) times its velocity. This explains why I have so much more momentum than my little cousin does. Also, work is involved in tubing because my boat has to place a force on me in order for the tube to go anywhere, otherwise I would be sitting still in the lake. But, the most important physics involved in tubing is kinematic equations. my inital velocity, final velocity, displacement, acceleration and time all are involved and rely on each other for me to be able to tube! So next time your tubing on Lake Ontario remember how much phyics is involved.
  6. That's a great way to find the average velocity!!
  7. Casey12

    Car Collisions

    When a car accident occurs, how can scientists see the change in momentum? After two cars collide and become connected, how is it possible to find the mass, momentum or velocity of either car? Simple, the conservation of momentum. If the vectors of before the crash and after are added up, they will equal each other. This can be written in an equation as: P-initial=P-final This is directly related to Newton 3rd Law, which justifies that all gorces come in pairs. But this is not the only physics involved in car crashes. When poth cars are moving towards eachother, they are exterting kinetic energy, and when they both come in contact with eachother, hit and begin to slide their energy is turned into potential. Also, when two cars hit their average velocity will drastically decrease! Who knew car crashes could have so much physics involved!?
  8. Casey12

    why guns have recoil

    Wow!! Didn't realize how careful you really have to be to stay safe!!
  9. Casey12

    Physics of Modeling

    I've always wondered why models are so skinny. Beyond fitting the designers clothes, there really seemed to be no point in forcing them to be so thin. This thought made me wonder, is there any other benefit to being so thin, do they move faster down the runway and do they have more momentum? Then I realized, this is a physics problem! So how could I test if skinny models move down the same length runway faster and if they have more momentum, which is what lead me to two basic physics equations 1. V=d/t 2. p=mv To deal with equation one, and knowing I must solve for V, I would need to time the models and measure the same distance each time. But just from those two measurements I can easily see weight doesn't affect the speed a model walks, no matter how thin they may be. So moving on to equation 2 and knowing I want to solve for p (momentum), I have to obtain mass and velocity. As I learned in the previous equation, velocity is not affected by mass, but it will still vary regardless of the model. But, as it is seen mass is a variable in the equation! So finally I can see mass does affect momentum! Overall, skinny models do not walk faster and do have a slower momentum, so whats the big deal in being stick skinny!?
  10. Hello I enjoy a lot of things outside of school. For example, I play a large part in the yearbook club and have taken classes at such places like FIT. I really enjoy fashion and learning all about the business end of it as well. I like to learn about things that intrigue me and am looking forward to learning more in this class! I am taking physics because I know it is beneficial for when i start applying to colleges. I think it will be a challenge and that by working hard I will increase my work ethic. This year I hope to learn about forces and why certain things happen the way to do. Overall, I am looking forward to the labs and projects.

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