# AnnieB's Blog

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Soccer

## Physics in working out

There is a great deal of physics in working out. For one, lifting weights themselves have numerous components of physics that contribute to the process. For example, when I do squats on the gym, I can find the magnitude of work I am doing on the weights by using the equation w= Fd. This is work equals force multiplied by distance. I can find the force I am exerting on the bar by figuring out the bars mass and multiplying that by the gravitational pull on the bar, 9.81 m/s^2. I then multiply this

## Physics in soccer

In soccer, like so many other physical activities, there are countless examples of physics. Newton's 3rd Law is evident for as I kick the soccer ball, the force of my foot acts on the ball, while the ball is at the same time applying a force to my foot. This supports Newton's idea that with every action there is an equal and opposite reaction. Free Fall is another physics- related component of soccer. When our goalie punts the ball one can examine the motion of the object as it travels up throu

## Physics in lacrosse

There are many examples of physics in lacrosse. Newton's 3rd Law can be found in action for as I am running with the ball, the turf is applying a force upwards on my feet, as my feet apply a force downwards onto the turf. Projectile motion is another component of physics that can be found in lacrosse. The trajectory of the ball as it comes out of my pocket (my lacrosse head) can affect how the ball is released. If launched properly, the ball should go straight. If the ball is launched at an awkw

## Physics in building the catapult

The catapult project was the epitome of physics. Not only did the catapult serve as an example of physics, but it required physics to build. Nailing together the wood supported Newton's 3rd Law. As I applied a force, hammering down the nail, the nail applied a force back up to the hammer. Even though it did not seem like it, the nail was applying an equal magnitude of force as the hammer was. The wood was also applying this same concept to the nail. As the nail was getting pushed into the wood,

## Favorite Physics Unit

I wanted to take the time to reflect on the past semester and I was thinking and I have realized my favorite unit in physics this year so far has definitely been the work and power unit. I find myself to be very comfortable with the work and power equations and understanding how to solve problems with them. What I thought really helped were the videos where we solved the problems using the crossfit people and their situations. Being able to see how physics appears in real life I have found helps

## The physics of falling

Anyone who knows me knows that I am unfortunately, rather clumsy. My coaches and teammates joke all of the time about it with me because it seems like every time I am the one on the ground. I really cannot help it though! Gravity really just seems to like me so much that it pulls me down every time! Last week in my lacrosse game against PalMac I found gravity once again summoning me. This time however, my falling was not due to my clumsiness (it was quite shocking) but rather a calf cramp that h

## The Doppler Effect

The other night I was sitting at my kitchen counter when I heard the wailing of sirens coming from off in the distance. The frequency and amplitude of the sirens was quiet at first because the emergency vehicles were so far away. However, the sound grew increasingly louder and louder and within the next minute, an ambulance sped past my house. As the sound of the ambulance died out, I heard more sirens coming. Just like the ambulance, the frequency and amplitude of the siren was quiet at first,

## Physics of sleeping

It is quite interesting how physics can be found in such random parts of your daily life. One such example of this is sleeping. When a person sleeps, they are exerting a force on the bed that they are sleeping on. According to Newton's Third Law, the bed then exerts that same force back on to the person sleeping. In addition to this, gravity holds the person down to the bed, keeping them grounded. When I need to wake up in the morning, I set an alarm on my phone and put my ringer on high. This w

## TI- Selfie Contest

TI- Selfie Contest

## Physics in running

As Mr. Fullerton says, and as I have mentioned before, physics can be found in virtually every activity we partake in. Running is one such activity that one can find components of physics if they look for them. I enjoy running but I have never taken the time to consider the physics within it, until now. For one, Newton's laws can be found in running. Newton's Second Law is proved through running for as I move my legs faster, push off the ground harder, taking longer strides, I find myself able t

## Physics of driving

When driving a car, one can find numerous examples of physics. One component of physics that drivers must be extremely careful of is centripetal force and the power of centripetal acceleration. During this time of year, roads are extremely slippery and often times people do not realize how fast they are going until they are trying to slow down and are skidding on black ice. On St. Paul Boulevard, there is a curve that is especially precarious to drive along during the winter time. My driving ins

## Importance of friction in winter

Winter time holds the potential to be a very dangerous season if it was not for friction. Ice and snow pose as threats to deter friction from doing its job. However, without friction, the roads would be filled with accidents and it would be nearly impossible to walk on the ground without slipping. During the winter, some people get special tires that have better traction on the slippery ground. The traction on the tires helps produce more friction so the car does not slide as easily. People have

## My sister's scream

My younger sister Ella is someone who tends to throw a fit when she does not get what she wants. These fits occur on a daily basis but the other day when she began screaming about me not letting her stay home by herself, I began thinking about the physics in her scream. In class we are learning about the different types of waves and how they travel. We are also learning about wave frequency and amplitude and how that affects sound waves. Ella's screaming tends to be extremely loud. She really li

## Waves on the beach

Over spring break, my family and I traveled to Florida to get away from the cold weather. We went to Singer Island, off the coast of West Palm. It was a beautiful place and the day we arrived we could not wait to get to the beach. When we arrived at our hotel it was around 5pm. High tide was in full swing. My sisters and I went out to the beach and could not believe how big the waves were! I had been to Florida numerous times before, but I have never experienced such big waves before! I naturall

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