# jacmags' Blog

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Volleyball

## physics of silly games

A slinky is an extremely fun toy if you are 3 years old, or even 73 years old! The way it transfers energy back and forth throughout it is very similar to a wave. A wave can either be longitudinal or transverse, but in this case, a slinky is like a longitudinal wave. It bunches up at some points, but then expands out with different distances between each metal ring. Waves are found in every day life such as jump rope as well. As you spin the rope constantly around, it represents half of a wave.

## Physics of Catching Skittles

The other day my team and I were messing around and were throwing skittles into the air and trying to catch them in our mouths. If we missed slightly, the skittles would hit our tooth and it would KILL. I saw all of the physics involved with it and knew why it hurt everyone's teeth. The skittle hit our teeth with a force and the impulse exerted the force on it and there was no time for the impulse to be spread out therefore causing more work to be done. The velocity that the skittle was coming

## Lacrosse games

Since it is now lacrosse season, games have begun. Within the game, physics takes place everywhere; especially on the bench, where I am! I get to stand on the sidelines and watch the game but there is so much physics involved with that. First off, I exert a force on the ground with the same magnitude of force that it forces up on me. This way, I do not go right through the ground, I am safe and secure on the sidelines. I am also facing a force downward on me which is gravity. It pulls me down 9.

## Waves in dancing

I was busting out the funky moves the other night and realized all the waves that were involved! Not only was the true wave involved (the dance move of course), but also sound waves! The speaker was blasting and I was jamming out to "Trap Queen" by Fetty Wap and noticed the changed in frequencies of the song. It would have a higher pitch along with lower pitches due to a change in the frequency of the waves. I turned the speaker up even louder when the beat dropped which caused an increase of th

## Projectile Motion

Tonight was the first night of my trip and our team decided to go out for Hibachi. I have never tried Hibachi before and come to find out, I never should have tried it. After we all ate, I started feeling sick. When we got back to the hotel, I learned a whole lot more about projectile motion. I ran in to the bathroom and realized how much projectile motion can affect ones life. With the vomit, there was TONSSSS of horizontal and vertical velocity. The rice moved the distance to the toilet in a c

## Packing a suitcase

As I packed for my tournament in Orlando, I was trying to squeeze all of my clothes into my suitcase without breaking it. When i pushed down on it, the suitcase pushed right back up at me because I had so many clothes stuffed in there. When I thought about it, the suitcase acted like a spring! A spring compresses and then expands just as my suitcase did. However, there is no "constant" within the suitcase as there is in a regular spring. The suitcase also required me to do work. I had to use

## Weight lifting at Pcx

I go to a work out facility in Webster called PCX. Here we do a lot of weight lifting and agility. When I was there this week, I saw all the physics involved in weight lifting. When doing a hang clean, I must exert a force onto the bar in order to lift it up. As I exert a force in it, the bar exerts the exact same force onto me. Along with me putting a force onto the bar, I must do work on it. When I lift it up, I do work on the bar but when the bar is coming down, it is actually doing work on m

## Weight lifting at Pcx

I go to a work out facility in Webster called PCX. Here we do a lot of weight lifting and agility. When I was there this week, I saw all the physics involved in weight lifting. When doing a hang clean, I must exert a force onto the bar in order to lift it up. As I exert a force in it, the bar exerts the exact same force onto me. Along with me putting a force onto the bar, I must do work on it. When I lift it up, I do work on the bar but when the bar is coming down, it is actually doing work on m

## Hitting in volleyball

Volleyball has so much physics involved its crazy. With every basic component of volleyball comes physics. One of the more exciting parts of volleyball is hitting, and without physics there would be no hitting! With hitting, the player jumps into the air and at her highest point she contacts the ball. When the hitter is about to jump, her initial velocity would be 0. Then, she must do work in order to reach the ball to hit. Work=Force(distance) therefore, the hitter must at least exert a force o

## 22 Jump Street

Recently I have just watched the movie 22 Jump Street. As i was watching, I noticed all of the physics involved in the movie. During the movie, Channing Tatum was shooting a gun and I saw all the physics behind it! The gun and the bullet inside of it both had momentum before and after it was fired. P(Momentum)=mv so when the gun was not shot yet, the momentum was 0. However, once the bullet was fried, the bullet had momentum and the gun had a recoil which had momentum. When the bullet was fired,

## The Physics of roller coasters

With every fun activity comes physics! At any amusement park, physics is everywhere. When on a roller coaster, energy is changing all throughout. When a roller coaster has come to the highest point on the tallest hill on the whole ride, the cart will have the greatest amount of potential energy. The potential energy equation is PE=mgh therefore, potential energy will always be greater when the roller coaster cart is higher. As the cart gains speed, its kinetic energy will increase. The kineti

## Shattering my phone screen

The other night, as I got out of my car to go to training, my phone fell out of my pocket and hit the pavement. In result, the entire screen became completely shattered. You could say this was just a misfortune of luck, but it is actually all physics. As my phone was just about to fall, it had a certain amount og gravitational potential energy. Once it began to fall, the energy changed into more Kinetic energy as the phone began to speed up before it hit the ground. The closer to the ground it w

## Physics of Sitting

This morning as I did my usual routine, I brushed my hair and then realized all the physics involved in it. As i was sitting at rest in my chair, i remembered that if i was to remain there forever without any force acting upon me, i would stay at rest forever. Newton's 1st Law states that and object will remain at rest unless acted upon by a net force. Also, the chair and myself created an equal force upon each other. Newton's 3rd law states that all forces come in pairs and if an object exe

## Driving on a Road Trip

This weekend my family and I took a trip down to Fordham University down in the Bronx. As I was driving, I realized all the physics involved in the trip! The car was traveling at a constant speed of 70 miles per hour when it was set on cruise control. On the thruway, the car was only traveling horizontally therefore, it had no vertical distance. the car remained on a straight path where only the horizontal distance was changing. It took us about 5 1/2 hours to get all the way to New York city. O

## Jumping in Volleyball

With volleyball, jumping is a key component to the sport. A hitter must be able to jump to reach the ball and hit it. Physics also applies to jumping. As a player jumps, the player is traveling up into the air for a certain amount of time until it hits their maximum height, and then comes down at the same velocity as they traveled upwards. Due to gravity, as the player jumps upward, gravity is acting upon its and pulling them downward at 9.81 m/s^2. Also, Newton's Third Law is also used in a pla

## Jaclyn's Blog: Volleyball

Hi everyone! As most may know, I am a volleyball player and I have come to realize physics apply to volleyball in so many ways. With serving, physics plays a major role in the way the ball moves. When the ball is first contacted from the hitters hand, it has an initial horizontal velocity along with a vertical velocity. As the ball travels over the net, it has a vertical acceleration of 9.81m/s^2 when it has left the servers hand. Gravity pulls the ball down to the floor and increases its veloci

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