Ever since you were little you would always hear your mom say "Buckle up!". It has become like second nature to me, as soon as I get into the car I put my seat belt on even if we are just going around the corner. But how does wearing a gray belt across your lap and chest help save you when a car is coming straight at you? Well, the purpose of a seat belt is that it will stop you when the car stops because unless acted upon by an unbalanced force an object in motion will stay in motion and just because the car stopped doesn't mean that you did. If you weren't wearing a seat belt and the car suddenly stops, due to inertia your body would continue to move forward. This could be potentially fatal. You could end up going through the windshield continuing onto the pavement. Wearing a seat belt reduces the impact force of the crash on you. By no means am I saying it won't hurt, because it will hurt, but it won't hurt as bad. In fact, according to the website on the physics behind seatbelts, if you are wearing a seat belt the impact force is about one fifth of the amount it would have been without a seat belt. So maybe your mom was right and you really should always wear your seat belt!
Monday, February 1, 2010
Sunday, January 10, 2010
Newton's Second Law
In Newton's Second Law I learned that acceleration depends on the sum of all forces (net force) and the mass of the objects. The greater the mass is the quicker it will speed up and reach the ground. The most difficult part in completely the problems is making sure that your free body diagram is complete. Once you have a good FBD solving the problem is very simple. Overall my problem solving skills have improved because I take more time to make sure that the FBD is complete and correctly done.
Saturday, December 5, 2009
Newton's First Law
Oh my gosh! I didn't look at the website because I thought that our only homework was to do the lab and other homework. I am SO incredibly sorry, Mrs. Gende.
I learned that for something to move it has to have a force behind it be it gravity, normal, friction force etc. I found remembering which force is which difficult but making the diagrams came easy to me. Being a neat and organized person my drawings are easy for me to understand which aids in my comprehension of the material. However some of when there is more than one normal force I find that a bit confusing! This can be seen in everyday life because we do not float around in the atmosphere! Due to gravitational force we and other objects, stay put on the ground. Okay, thanks for reading. Again, I am SO very sorry that this is so late. I am so sorry.
I learned that for something to move it has to have a force behind it be it gravity, normal, friction force etc. I found remembering which force is which difficult but making the diagrams came easy to me. Being a neat and organized person my drawings are easy for me to understand which aids in my comprehension of the material. However some of when there is more than one normal force I find that a bit confusing! This can be seen in everyday life because we do not float around in the atmosphere! Due to gravitational force we and other objects, stay put on the ground. Okay, thanks for reading. Again, I am SO very sorry that this is so late. I am so sorry.
Tuesday, November 10, 2009
Free Fall
This is my free fall glogster and once you click on and read through my glog you will become a free fall expert! Free fall glogster
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