The Team with the Momentum!

This past tuesday, something incredible happened, our Physics teacher took us to play football! Can you imagine our excitement when we heard his words? That was one of the best feelings I've ever felt. But something was wrong, he wasn't going to take us out to play just like that. I mean, it was just too fun to be a Physics class, though, Physics is sometimes fun. So, since it couldn't have been that simple, now we have to write a blogpost on momentum during the game. That's exactly what this is.

First of all let's start by defining some terms that we will be mentioning during this Physics blogpost.

Momentum:

Momentum is a measure of an object's inertia of motion. Momentum refers to the quantity of motion that an object has. If an object is in motion then it has momentum. Momentum can be defined as "mass in motion." All objects have mass; so if an object is moving, then it has momentum - it has its mass in motion. Momentum depends upon the variables mass and velocity. Momentum is directly proportional to an object's mass and directly proportional to the object's velocity. In order to stop an object with momentum, a greater opposite force need to be applied.


For this that we stated, we can ilustrate the formula for momentum as follows:

                                                               p = m • v

*Note: "p" stands for momentum.

Impulse:

In Physics, impulse is the product of multiplying the quantity Force by Time. And since the quantity m•v is the momentum, the quantity m•Δv must be the change in momentum. The equation really says that the impulse is the change in momentum.

Now the we know what these terms are, it's easier for us to relate Physics with our football.

Momentum in Football:

We all have a mass and we said that momentum is mass in motion, so if we run that's motion, therefore we have momentum.

Impulse in Football:

We said that impulse is the change in momentum so if the mass doesn't change, impulse is the same mass times the change in velocity. So, if I were running across the field with the ball and sudenly Alain comes and pushes me with ehough force in order to stop me, that would mean a change in velocity, which is impulse.

God is our momentum!

What happens when we apply a force strong enough to move an object? Bam! This object has momentum! This is exactly what happens with God, he is the force that we need in order to have momentum. Usually, you need a big amount of force to stop an object with momentum. This is the only difference between the momentum that a simple force gives and the momentum God gives. When your momentum is given by God,  there's nothing that can stop you!

Torque is fun!

What is Torque?
Torque is the application of a Force acting at an specific distance and tending to cause rotation.

Picture taken from: www.torqueleader.com



How is torque calculated?
Torque is the result of multiplying the value of Force applied by the Distance from the point of
application.
Comparing two examples, we could notice that the same resultant Torque can be achieved with
a lower Force if the Distance from the nut/bolt is increased.

In order for us to learn what a Torque is, we had a small activity last week in our physics class. We use a lever, a ruler, and several metric masses. 
We tried to balance the ruler by itself but it looked impossible, so we added a clip to one of the ruler's ends in order for the ruler to be balanced. 




Once we had our ruler balanced, we added the metric masses to the knife-edge clamps which were located at each end of the ruler.
When finally we had our ruler balanced with the masses, we wrote down our data and with that data we got the torque force of the two metric masses.

During this activity we had a lot of fun because our teacher, José Popoff, took us to the playground and let us play with the merry-go-round. So yes, Physics CAN be fun! :)
As we said before, torque is a forde applied at a certain distance that causes rotation, so we can see that in a merry-go-round game we find a torque. Why? Because a force is being applied at a certain distance from the center of the object and it is causing it to rotate.

The activity wasn't over yet. While we were in the classroom we had another activity. This time we used something that looked like a bicycle's wheel (actually it was one) and a rotating board. We had a lot of fun because we didn't know what was going to happen.

We got on top of the rotating board and hold the wheel with our hands. Someone else would come and make the wheel spin for us and we would turn the wheel in different directions and what this caused was that we started rotating in the opposite direction from where the wheel was going.

The day was almost over but we had something else to do before we left. We observed ans "played" with a gyroscope, which by the way is a very interesting and curious instrument. You could trick anyone with one of those things. It was a very interesting activity, I really enjoyed it. It was really fun. :)

Chemistry Lab Report: Bond Types

Check.

Observing Animal Cells

This is a Vlog on our lab report which we decided to do in couples with Alain Peña. It's a very short video, we hope you enjoy it. Thanks for watching!

Biology Lab Report

Vlog on my Biologyy Lab Report: Observing Plant Cells

Kart Test

For this past Wednesday, March the 20th, we had to bring a small kart made of any material we wanted for our Physic's class. We went to the lab and we measured the force and the mass of our kart. We did several  trials and we recorded different results which didn't vary a lot from each other.

The first mass of our kart was of 82.88 grams.

We then tried to measure the force that was required to move our kart by pulling it with the spring balance. We weren't able to to measure the force required to move our kart because they weight of our kart was too little, so what we did was that we increased the mass of our kart times 3.

We then recorded a weight of 248.64 grams. After increasing the weight of our kart, we tried to measure the force required to move it and we recorded several results which can be seen in the following table.

Dancing Physics

In our past Physics class with Mr. José Popoff, we had the opportunity to dance with a dancepad a classmate took to school. You might be asking yourself "what does dancing has to do with Physics?" Lets see.
The topic we are studying in Physics is Newton's Laws of Motion. First of all, lets state Newton's Laws.

1. First law: If there is no net force on an object, then its velocity is constant. The object is either at rest (if its velocity is equal to zero), or it moves with constant speed in a single direction.

2. Second law: The acceleration a of a body is parallel and directly proportional to the net force F acting on the body, is in the direction of the net force, and is inversely proportional to the mass m of the body, i.e., F = ma.

3. Third law: When a first body exerts a force F₁ on a second body, the second body simultaneously exerts a force F₂ = −F₁ on the first body. 

Now that we have stated this laws, lets apply them when dancing.

First Law.

Explanation: The first law says that if there's not a changing force applied to an object, for example if you don't push/pull harder or softer, then the object's velocity is going to be constant. If the velocity is constant, the object can be at rest (if its velocity is equal to zero) or it can be moving with a constant speed and in a single direction. Constant means that it doesn't change at all.
Application: Lets take your body as the object. If you are not moving at all (velocity equals zero), then your velocity is constant because it is always zero. Now, lets say you start moving from left to right and you don't stop nor change your velocity, no one gets in your way, so you continue to move and move. Since you are not accelerating, there's no net force being applied on you, therefore there's no change in your velocity making your velocity be constant.

Second Law.

Explanation: The second law of motion says that the acceleration of an object is dependent upon two variables, the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting on the object, and inversely on the mass of the object. As the net force is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.

Application: Again, lets take your body of an object. When you dance, sometimes you jump, so lets say you are jumping. When you jump, you excert a force against the floor which pushes you up, this is the net force. Depending on how strong the net force is you will jump high or not that high. Then, how high or how much you accelerate, is dependent on how strong the net force is. Now the mass. Lets say you have this friend who is chubby. He has a lot of mass! What do you think is easier? Is it easier for a thin kid to jump or for a chubby one? For the thin, of course! Why? Because the mass of the thin kid is less than mass of the chubby one, therefore it's easier for him to lift his body from the floor. So we can say that an object's acceleration depends on its mass.

Third Law.

Explanation:  The third and last of Newton's laws says that when, for example, lets say you gave an initial force (F1) to an object, that force caused the object to move, so the object is moving, and moving, and moving, when suddenly, it hits another object. When the first object hit the second object, it produced a force on the second object (F2) which is in the opposite direction to F1 but with the same magnitude. (-F1). This means that F₁ and F₂ are equal in magnitude and opposite in direction.

Application: Lets say we are not expert dancers. We are human and we make mistakes. So while we are dancing, we are moving from side to side, and suddenly we crash against a mate who is not moving (he is at rest, velocity equals zero). When we crash against him, we excert a force on him, causing him to move and eventually fall to the floor. The force we excerted on him has exactly the same magnitude or strength as the force that was moving us but in the opposite direction.

So, now you know how you can apply physics when dancing. Hope you liked my post, I would appreciate any comment. Thank you very much for reading.

Who am I? This is me.

This is Antonio José Rodríguez Zavala (Alias Tony)! I'm 16 years old. I was born December 22, 1996. I'm from the city of La Lima, Cortés, Honduras, C.A. I attend Sunshine Christian Bilingual Institute. My homeroom teacher is Mr. José Popoff. I live with my parents, I also have a brother and a sister both younger than me. I'm a musician, I play 7 instruments, Piano, Bass, Acoustic and Electric Guitar, Drums, Violin, Flute, and percussion generally. I love playing soccer, volleyball, tennis and any other sport. I love hanging out with my friends and having fun. I LOVE MUSIC. ♥ I love everything that has to do with music. I'm a writer and future producer. Music is "my everything". I listen to all types of music; classic, rock, pop, hip hop, rap, techno (dance, trance, house, dub-step, etc.), merengue, country, bachata, salsa, etc. My favorite bands/artist are Muse, Linkinpark, Coldplay, 30 Seconds to Mars, Bruno Mars, Foo Fighters, Maroon 5, Wiz Khalifa, Panic! at the Disco, Foster the People, Lana del Rey, and many more. I go to church and praise the Lord. 

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Instagram: Tony_JRZ 
Skype: Aj_rodriguez96

iDevice Jailbreaking

This time I have the opportunity to talk about Jailbreaking iDevices (iPod, iPhone and iPad).
It's a very interesting topic, considering that its process may vary according to the device you posses.
You have to be very careful throughout the process, otherwise you can turn your iDevice into an iBrick (making it no longer useful). Its a very easy process.

In order to jailbreak you need:

Redsn0w:
-redsn0w 0.9.15b3 (Windows)
-redsn0w 0.9.15b3 (OS X)

And your device latest Firmware:
-All firmware download links

Once you have these, follow these steps:

-Unzip redsn0w files.
-Run redsn0w.

This window should appear.

Hit Jailbreak.

Turn your device off and click next.

After clicking next you will need to put your device into DFU mode.

To put your device in DFU mode you need to follow the next steps:

Step 1: Hold the power button for 3 seconds.
Step 2: Without releasing the power button, press the home button for 10 seconds.
Step 3: Release the power button and continue holding the home button for another 15 seconds.

And that's it. Your device should now be on DFU mode (black screen). If it didn't work the first time, repeat the process until it does.

The rest of the process will take place on your device.

Once the process is done, you will have a Jailbroken device. :)

Hope this tutorial helps you. If you got any questions let me know, I will be more than pleased to help you. ;)
Antonio Rodríguez on Twitter