marisam96
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This blog post is going to be slightly different than other posts. Most have to do with activities that people do but for this blog post, I wanted to connect physics not with an activity that I, or someone I know, do but with a class I take. More likely than I would like to admit, taking physics has allowed me to better understand my AP calc class. We frequently do problems that have to do with finding the speed/velocity of an object, then the acceleration, or the derivative of the speed/velocity, However, occasionally in calculus, we are giving the problem, but not an equation to plug the problem into. Thanks to physics, I have been able to know how to tackle a calc problem because of what I have learned in physics. I know that a=v/t and v=d/t and typically, enough of those values are given to me so that I can finish the problem. Also, we have learned about Newton's method in calc, which was just crazy weird because as we were discuss Newton's laws in physics, the same guy's method popped up the class right before. So while most people can find the physics in their sport of choosing, I can say that I have seen physics reappear in my Calculus homework.
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Back before my mom had her neck surgery, she was a huge horseback rider. We constantly hear stories of her competitions and the multitude of horses that she used to own. She doesn't ride as intensely as she used to, but when she did, she would use so much physics. Her major activity was the jumping because she loved the way it felt. But, in order to be able to reach that maximum height of the hurdle, she had to make sure that the horse was traveling at a fast enough velocity for a good time so that the jump would occur smoothly. Another fun fact about the jump that the horse would make is that even though the horse weighed a tremendous amount, at that maximum height point, it would still stop for a split second.
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Well, it seems as though my brother is the common denominator in a few of my blog posts! Much to my dismay, my brother has recently decided to join a MMA (mixed martial arts) class with a few of his friends. But I suppose that this could potentially be a positive thing seeing as I am getting a blog post out of it. Say my brother weighs 65 kg and is punching someone with a velocity of 8.3 meters/second in 2 seconds. Using the infamous equation F=ma=m(v/t), we can calculate the hypothetical force that my brother punches with. So, let's plug in. Our givens are ... m=65 kg v=8.3 m/s t=2 s F=? F=(65kg)((8.3m/s)/2s)=269.75N Not only does my brother punch with a force of 269.75N, but thanks to Newton's 3rd law, we know that the person he is punching is giving him 269.75 N right back.
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With ski club having started back up again for the winter season, skiing is basically the only thing that my brother talks about at home. Although I do not ski, after hearing all of my brother's stories about each Friday session, it basically feels like I'm right there with him. Recently, he shared with me how the ice can effect the skiing conditions. During one of his trips up to Bristol, the hills were entirely covered with ice, and he chose to go to the smaller hills. This particular story really got me thinking... Compared to the coefficient of friction of the snow to the ice, the ice has a numeric value nearly three times higher! No wonder why he didn't want to ski on the larger hills. Had he not chosen to scale back, he could have gotten seriously injured. Also, with the topic of skiing, we could use kinematic equations to figure out the different components of the activity.
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we have all been there. you're approaching a green light when all of a sudden it changes dramatically from yellow to red. you're mind is racing at what seems to be 100 miles an hour and you don't know if you should stop or just go through the intersection. well, i am here to help you figure out what to do in this crazy intense situation. to start, it all depends on how fast you are going. if you are only going 15 miles/hour, it would be safe to stop because it only takes a small distance for the car to stop. On the other hand, if you are going 60 miles/hour, you shouldn't take the risk of stopping. since you are moving at a greater speed, it is going to take more time and a greater distance for the car to reach a stop. to figure out the exact distance, you can easily calcuate this using our handy dandy kinematic equations! simple plug in your speed, Vi, and Vf and solve for distance! in no time you will find out if it is okay to stop at that insane intersection or not. but just remember, drive safe and stay phyabulous with physics! (pun fully intended)
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Now, don't be too quick to judge this post! Texting holds sooooo many aspects of physics! To start, you can realitively easily find the speed at which it takes you to type a word! Or even the speed at which it takes to type an entire message! To begin, you take the distance of your fingers from the phone. Simple enough! It will probably be a few centimeters. Then, the amound of time it takes to type a word! You can just use a stop watch for this portion. Finally, make the acceleration zero because your velocity probably won't change too much. Now that you have all of these factors, you can find the velocity it takes to type a text message. Isn't that pretty dandy! who knew it was possible to have physics within texting!
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Recently for Physics, we were assigned to create a catapult, which we then launched in class on Friday. This was a crazy experience to undergo! My partner and I had to create several Vi, Vf, d, a, t tables to figure out which catapult design would launch the softball producing the possible maximum distance. Unfortunetly, our plan didn't work out the best and the softball only went a distance of one meter, but that isn't the point. We figured out that if we were to launch the softball at an angle of 45 degrees, we should be able to get the maximum distance feesable from our catapult. To make sure that this theory is infact accurate, we tested out different angles in our equations like 40 and 50 degrees just to be sure that our calculations were true. The project, I felt, was very informative and taught me a lot. Not just with working with the equations but also working with tools to create a successful object using what we have learned in class!
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Believe it or not, but there is a great deal of physics even just when creating this exact blog post! Seriously, think about it! My hand that I am using to type right now is undergoing the force of gravity, which is 9.81 Newtons, or even the acceleration that my finger are moving. Also, if I were to set up a diagram involving the amount of time that my fingers are in the air from the moment that they leave the keyboard to the moment they touch the keyboard again and press down on the letter, and the other factors involved in typing, I would be able to calculate the physics behind my making this blog post. If you truely put the though behind what it takes to do almost everything you do, a massive amount of physics will soon unfold right in front of you!!!!!
