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SJamison

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Blog Entries posted by SJamison

  1. SJamison

    Skating

    By SJamison,

    So with the hockey season starting today I thought that i would do a blog about hockey. Thinking about skating in hockey and why you need to get your skates sharpened, this is to allow for there to be enough friction to propel you forward. This is just like running were you need friction between the ground and your feet to be able to drive forward by pushing back. The only difference is that in hockey you need the skates sharp to cut into the ice in order to drive yourself forward. This is showing Newtons law where if there is a force in one direction there must be one in the equal and opposite direction. Being able to gain traction is hockey is key to being able to be fast that's why you angle your blades on the ice instead of straight on as you can see in the video below. You can also see how the players you there sticks to go into the turn to help get around the turn more compact instead of having it out wide which would slow you down. 
     
  2. SJamison

    And so it begins

    By SJamison,

    I'm really looking forward to this year in physics C. I really enjoyed AP physics last year and it sounds like this year we will be adding onto content that we previously learned which will be great. However, the class so far has seemed pretty terrifying, even though we have only been at it for about 6 days, the thousands of accounts to sign up for and the mountains of work hanging over our heads(which of course has potential to do damage hahaha) makes it look like we are in for a challenging year. But, I do think that with some strict time management and and staying on top of the work it will help to make it easier as we endeavor into the world of physics C. 
  3. SJamison

    Stomping in the snow

    By SJamison,

    When you are walking in the snow have you ever noticed that when your foot lands in light, fluffy snow your footprint is actually bigger than it is and you can see the extra space with your foot still there? This happens because when you are bringing your foot down it traps a pocket of air between your foot and the ground. As a result of this once your foot hits the ground that air pocket is dispersed thus it causes for the snow around your foot to move even though you are not touching it. This can be pretty satisfying when you are walking home in the freezing cold with nothing to do.  
  4. SJamison
    With this wonderful weather comes wonderful roads. From driving, it can be a very dangerous with the coefficient of friction much smaller making roads very slippery. Thinking about our previous unit with rotational and transnational motion it can relate a lot with a car in the snow. When starting up the tires often spin when very slick out causing for more rotational movement rather then the wanted transnational. And then as you get going you begin to build more transnational rather than rotational. So for every one out there driving be careful!!!  
  5. SJamison

    Human strength

    By SJamison,

    A human body has the ability to release a huge amount of strength through its muscles. The reason that a person is unable to unlock all of this strength at any given time is so that muscles do not get strained or torn in the process. This is a cool safety feature of the body so that people do not over exert themselves and end up crashing. In order to produce large amounts of strength it takes a lot of energy and using muscles to their max for a long period of time can be very harmful to the body. However, in some cases when on an adrenaline rush people are able to tap into this strength in order to do things that seem to be humanly impossible. There have been incidents were people have lifted cars or moved heavy objects in order to save or do something. This shows just goes to shows how powerful the human body is.   
  6. SJamison

    Hockey shot

    By SJamison,

    Thinking about what we have been learning in physics, on the topic of energy, it makes it more clear to see some of the physics that goes into taking a shot in hockey. I mean they go so fast but getting there was a little hard for me until this unite that we are in now. Looking at elastic potential energy you can clearly see that in the picture below. It's crazy to see how that potential energy is turned into kinetic energy  in fractions of a second and the puck is sent flying at ridiculous speeds.
     
  7. SJamison
    So last Friday our class of 22 had the pleasure of taking part in a Projectile Lab in which we would shoot our grade. In this lab we would be trying to hit a textbook after making various calculations. Another important aspect of this lab was the fact that if we hit this book the whole class would pass and if we missed the whole class would fail. As many of you know this lab didn't go so hot, crunched for time and lack of communication lead to a complete miss. Mr. Fullerton, being the wonderful man that he is, allowed us to re-due the calculation and write about it in the blog I'm currently writing to receive full credit after that humiliating miss. After doing the calculation again, I came to the conclusion that the book should have been placed at the center of about 2 meters. The thing that messed the class up the most was the fact that there was a lack of time and the push at the end caused for a mix up with numbers due to not being able to think clearly stressed about the time.
    After doing this lab and looking back on it, with some more communication it would have helped to make the lab go quicker so we aren't crunched for time also another idea would be to split into into small groups to get an answer which to then compare later instead of trying to work on it as a bigger group. I think that these things are key to this lab to allow for success. 
    Bellow are my calculations for the value in which the location of the book should have been placed.
     
     

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