To add to the benefits of the Kerbal space program listed in the previous post, it helped us with the bottle rocket mostly in terms of simplicity. Instead of trying to make a giant rocket with parachutes or other complicated things, we decided to go with a simple rocket because we learned the importance of aerodynamics and weight balance through the Kerbal space program. My group realized that all we really needed was the two liter bottle, fins, a nose cone, and some weight on the top of the roc
Looking at the stationary bike that my dad bought for my mom for too much money, I realized that all these bikes do is take a normal bike and add friction to it in order to give the feeling like you are actually riding a bike. The friction of some material on the bike tire requires work to overcome it, and since W=Fd, the work required is the frictional force times the distance traveled, so you burn however many calories the work you did is equivalent to. Therefore, you can create one of the m
Because I have a habit of bouncing from activity to activity, I chose to participate in the musical this winter after my body failed to push through the pain of indoor track. With my luck, it turns out that the musical this year has multiple tapping numbers, so i get to learn how to tap dance! So I wondered, how do tap shoes make the noise that they do?
The physics is really quite simple. When the tapper pushes their foot to the ground, a lot of the kinetic energy is converted into sound ene
There are a few things that come into the physics of punching something. First off, impulse plays a huge role in punching somehting. Obviously as you punch something such as a wall or a person you will experience an impulse as you have a change in momentum. Therefore the thing that you are punching will feel the force of the punch as well as the impulse delivered from the punch. Due to Newton's second law you, the puncher, will also feel a force driving backwards in your direction as every react
Hot Rod, arguably the greatest movie ever created, actually has quite a bit of physics incorported into it. The part I will focus on is when Rod fails miserably to jump the local pool. Barely making it halfway, Rod slowly spins forward while in the air and lands face first, bike and all, into the pool. His demise results from two things - lack of kinetic energy and conservation of angular momentum. While he did have a ramp leading up to the jump, it was not nearly big enough to clear the poo
Alright Charlie, I'm writing a cookie problem just for you. You might need to get the cookie from Liz, but I figured I'd write one since you said there haven't been enough. And continuing with the Disney theme, here goes: Mulan is curious about how current and magnetic field interact, so she inserts her charge filled sword (which temporarily acts like a wire) of length 1 m into a magnetic field of 2 T in the postitive i direction, creating a force a 2.5 N in the positive k direction.
1) W
As the playoffs are underway, Bills fans (the sad category that I put myself under) have the same dilemma as they have since the 21st century began - which team are they going to root for in the playoffs this year? Year after year, the Bills struggle to qualify for the post season, a big reason being that they never have a strong quarterback. Their most recent excuse - Ryan Fitzpatrick. So lets look at why he's so awful:
When you look at an elite quarterback like Tom Brady (as much as I ha
After spending about two hours in a hot tub the other night and therefore having excessively pruney hands, the question that I've always been curious about came to mind: why does our skin get pruney when it's been under water for a long time? I looked up some things, and discovered that at first, scientists believed that it was simply due to the different layers of skin we have. The outermost layer of the outermost layer of our skin has cells that are filled with keratin, a protein that keeps y
Continuing with the physics of recreational sports, I'd like to talk about the physics of tether ball, a sport I'm not quite as good at. But, tether ball clearly demonstrates centripetal motion, and is very interesting to delve into. A player will hit the ball with a horizontal force F. Neglecting air resistance, this will temporarily be the only force on the ball, and will equal the mass of the ball times the acceleration of the ball. Centripetal acceleration equals (v^2)/r, so, given that
So apparently there's more to dropping a ball than just gravity... who would have thought?! Well, for starters, when the ball is above the ground it has potential energy, due to the equation U = mgh. (See? Gravity is key!) As the ball comes closer and closer to the ground though, that potential energy is steadily converted to kinetic energy in the form of velocity (k = .5mv^2). Since m is in both equations, the mass of the object does not affect how fast the ball falls nor the time it takes
As I go off to Tufts University in the fall, one of the things that I'm looking most forward to is joining the qudditch team, where I will be a chaser. One of the tuft-est (see what I did there?) things about being a chaser is that one hand has to hold the broom while you run, meaning that you have to catch the ball with solely the other hand. This is difficult for two reasons: 1) The force felt from the ball is directed onto one hand instead of two, so the force is spead across a smaller plan
So good thing I spent half an hour trying to figure out how to make a post, and then thought, 'hey, maybe I should actually look at that sheet that Mr. Fullerton gave us,' only to realize that all I had to do was verify my account, and that I wasn't supposed to make my real name my user name. But anyways, here is my post. The first thing to know about me is that I love Jesus, and really the reason there's any need for you to know that is because that is why I'm taking AP-C Physics. I would lo
Well this is kind of bittersweet, finally being done with blog posts but also realizing that high school is completely over, as is Physics C with a fantastic teacher. I've learned so much during the year, from angular analogs to retarding forces to induction to the sheer brilliance of Walter Lewin's ability to draw a dotted line; it's been quite a year. I've appreciated this blog posts as much as I've hated them, mostly because they forced me to truly learn the stuff that I write about. And n
In the famous Bible story of feeding the 5000, Jesus and his 12 disciples feed 5000 men with 5 loaves of bread and 2 fish. But, the 5000 only counts the men, and since these people have been following Jesus for over 2 days, it can be assumed that they are with their families. On average, we'll say that each man has a wife and two kids, speaking that some of the men weren't married and some of the men had much larger families. That means that this story is actually the feeding of the 20000.
In the wake of the costly hurricane Sandy, its interesting to look at how physics explains the dangers of those extremely powerful winds. In my backyard, the gusts snapped a horizontal branch off of one of my trees on monday night, so I wondered how dangerous it would be if I was standing under the branch when it hit the ground. The branch was about 4 meters high. Assuming that the wind was moving completely horizontal and perpendicular to the branch, the branch would have had no vertical for
As I perpare myself mentally, physically, and spiritually for the upcoming CYO basketball season, I can't help but think of the physics that partner with a fluid and successful basketball shot. Players that have perfected their basketball shot, like Ray Allen, have found a combination of enough leg bend, a straight-armed follow through, and an effective wrist flick. With these three key components, the ball travels with arc and backspin in a projectile motion, sailing through the hoop. The poten
The brain is an incredible thing and is refered to as the world's smartest computer for a reason. I've recently grown to love muscle memory as it helped me greatly in performing in a musical this past weekend. Even though I would be in the middle of a dance number and completely forget the next part of the dance, my body would do the moves for me without me even thinking about it. This is because of muscle memory, as our bodies build neural pathways after doing a certain activity over and ove
After spending quite some time with the Kerbal project, I am starting to understand how the program works. Building the biggest rocket possible doesn't really work; you need a balance between fuel level and weight, aerodynamics, the necessary seperators and parachutes, and a knowledge of when to hold off on burning fuel, the SAS, and other things like that. Thus, our first couple launches were not as successful as we would have hoped, but as we learned to decrease the drag force by improving the
Given that this is my first post of the second quarter, it's fair to say that I am not always on top of my Physics work. And since I have not been doing as well on our tests as I would hope, I have a couple new year's resolutions regarding Physics:
1) Do my blog posts before the weekend that they are due!
2) Continually look over equations so as to hammer them into memory
3) Study more diligently before tests instead of "hoping for the best" as I often do
With these resolutions, hopefu
After not performing as well on the practice physics test as I would have hoped, I began to think about the physics of test taking, mainly using energy. We've learned that kinetic energy = .5mv^2 and that potential energy = mgh. In this instance, m = the question number, v = the speed that I answer questions, g = how easy the test is (the greater g is, the easier the test is), and h = my confidence. Therefore, my potential energy at the beginning before I take the test is converted to kinetic
Although I personally believe that the Nintendo 64 is the greatest game system ever, playing Mario Tennis and my understanding of physics has led me to realize that a big reason why "better" game systems have been created is the lack of realism in the physics world in games such as Mario Tennis. The game creators didn't exactly take momentum into account given the fact that the ball is only hit with 4 speeds with 4 shots - a top spin, a slice, a lob, and a smash. In the real game of tennis, pl
Although Albert Einstein's mess of hair was most likely due to the fact that he rarely slept well because of the equations constantly rattling through his brain and that he really didn't care what he looked like since he was too busy making history, electricity also plays into effect.
Due to the likely rolling around that Einstein did at night, his hair felt a lot of friction from his pillow case and the sheets on the bed. This frictional force led to the passing of electrons from the shee
Reflecting on my Christmas presents, I immediately think of the incredible gift that my sister Julia got me, these super comfortable moon boots. But why are they so comfortable? As with most things, physics offers an explanation. As we've learned way back with momentum, impulse is equal to the force multiplied by the change in time. Impulse also equals the change in momentum, and given that momentum is conserved when only conservative forces are acting on the object, the impulse does not cha
I recently played a very poor serving tennis match and sit here thinking about why my serve was and often is so inconsistent, realizing that it comes mostly from my toss. The racket should contact the ball when the hitting arm is fully extended, but I often toss the ball short and contact the ball while my arm is still bent. By hitting the ball at the highest possible point, I maximize power and accuracy - the ball is at its maximum potential energy so more kinetic energy results when it is co
