References

Retrieve from.https://www.google.com.ph/search?q=elastic+collision&oq=elastic+&aqs=chrome.1.69i57j0l5.5577j0j4&sourceid=chrome&ie=UTF-8
Retrieve from https://en.wikipedia.org/wiki/Elastic_collision
Retrieve from. https://www.youtube.com/watch?v=J9xOMPPJNm0
Retrieve from www.athleticscholarships.net/history-of-soccer-football.htm
Retrieve from https://en.wikipedia.org/wiki/Inelastic_collision
Retrieve from http://www.dummies.com/education/science/physics/how-to-determine-whether-a-collision-is-elastic-or-inelastic/
Retrieve from https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcRi2SmEzR2PIb6Rmcy4Q18bPL9hxB0I5tM04z77_Hl6GcJbP0eIHQ

Elastic and Inelastic Collision

   Elastic Collision

What is Elastic Collision?

• When a soccer player kicks a soccer ball, the ball and player's foot remain separate since there are no shape changes or deformities.
• Elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies after the encounter is equal to their total kinetic energy before the encounter.
• Elastic collision are those in which no kinetic energy is lost in the collision.

    Inelastic Collision

What is Inelastic Collision

• Macroscopic collisions are generally inelastic and do not conserve kinetic energy, though of course the total energy is conserved as required by the general principle of conservation of energy.
• Te extreme inelastic collision is one in which the colliding objects stick together after the collision, and this case may be analyzed in general terms.
• Most ordinary collisions are classified as inelastic collisions because some of their kinetic energy is converted to other forms such as internal energy.
• Inelastic collisions may not conserve kinetic energy, but they do obey conservation of momentum.
• In Nuclear physics, an inelastic collision is one in the incoming particle causes the nucleus it strikes to become excited or to break up.

    Collision

What is Collision?

• An instance of one moving object or person striking violently against another.
• A collision or crash is an event in which two or more bodies exert forces on each other for a relatively short time. Although the most common colloquial use of the word "collision" refers to incidents in which two or more objects collide, the scientific use of the word "collision" implies nothing about the magnitude of the force.

How to Determine the Elastic and Inelastic Collision

In physics, collisions can be defined as either elastic or inelastic. When bodies collide in the real world, they sometimes squash and deform to some degree. The energy to perform the deformation comes from the objects’ original kinetic energy. In other cases, friction turns some of the kinetic energy into heat. Physicists classify collisions in closed systems (where the net forces add up to zero) based on whether colliding objects lose kinetic energy to some other form of energy:

• Elastic collision. In an elastic collision, the total kinetic energy in the system is the same before and after the collision. If losses to heat and deformation are much smaller than the other energies involved, such as when two pool balls collide and go their separate ways, you can generally ignore the losses and say that kinetic energy was conserved.
• Inelastic collision. In an inelastic collision, the collision changes the total kinetic energy in a closed system. In this case, friction, deformation, or some other process transforms the kinetic energy. If you can observe appreciable energy losses due to nonconservative forces (such as friction), kinetic energy isn’t conserved.

You see inelastic collisions when objects stick together after colliding, such as when two cars crash and weld themselves into one. However, objects don’t need to stick together in an inelastic collision; all that has to happen is the loss of some kinetic energy. For example, if you smash your car into a car and deform it, the collision is inelastic, even if you can drive away after the accident.

Momentum

What is Momentum

The quantity of motion of a moving body, measured as a product of its mass and velocity.

Momentum= Mass*Velocity

P= M*V

Example in soccer, we compute the kg of the ball and the distance of the ball to the goal and the time of the ball to goal if the player kick the ball.

The weight of the soccer ball is 416kg

The distance of the ball to goal is 16.5m

The time that the ball travel to goal is 26s

So let's solve the problem.

In the formula we solve the products, so to solve this we get the mass and after that we divide first the distance and time. Like this.

First: P= 416*

In first steps we put the mass or weight of the soccer ball.

Second: 16.5/26

We divide the distance and time to get the velocity.

Third: 63.5m/s

We put the answer of the distance and time

Fourth: 416*63.5

So we after we get the velocity, we can now multiply the mass and the velocity to get the product.

Fifth: 26.4kg*m/s

So, in the last steps we get the total of product and the final answers.

In the problem we know that the momentum of the soccer ball to the goal is 26.4kg*m/s.

Pictures and Videos of Momentum

IMAGES

 Inelastic, because as what you see in pictures the striker and the keeper was make a contact that can make a momentum because of their force that they give.

 Inelastic, it is obvious that the player was outbalance and her feet was block in their opponent so that are the reason that the player was falling down in the field.

VIDEOS

https://www.youtube.com/watch?v=J9xOMPPJNm0

In this video, you can really understand what is motion. They will explain/show it according to their action. 

According to the momentum part, they also include the motion and collision. For more information, 

just watch the video to expound your knowledge about this blog.

Kicking the Ball

Kicking is fundamental to soccer. It is informative to analyze a soccer kick using physics. The schematic below illustrates a kick in action. 

 

To analyze the kick we can treat it as an inelastic collision in one dimension, between soccer ball and foot. For inelastic collisions there exists an equation which accounts for the inelastic nature of the collision. This equation relates the initial and final velocities of the colliding bodies. The equation is: 

 

Where: 

e is the coefficient of restitution. For all collisions this value is between 0 and 1. For e = 1 the collision is elastic and kinetic energy is conserved (the most efficient case). For e = 0 the collision is plastic (the most inefficient case), and the colliding bodies stick together and move with the same velocity, after impact 

• V_b1 is the velocity of the soccer ball before the kick 

• V_f1 is the velocity of the foot before the kick 

• V_b2 is the velocity of the soccer ball after the kick 

• V_f2 is the velocity of the foot after the kick 

History of Soccer

Soccer, known globally as association football, football, or futbol, is by far the world's most popular sport. Various similar games were played in ancient times, but soccer as we know it today was first started in 1863 with the founding of The Football Association in England. Before this time, amateur clubs would agree upon rules before playing a game. With the formation of The Football Association, a standardized set of rules was established, and the sport soon became very popular. Amateur clubs were replaced by professional teams, and soccer became big business, giving us the game we have today.

Soccer has had a multitude of extraordinary athletes to play throughout its history. Some of the most highly regarded soccer legends throughout history include Pelé, Diego Maradona, George Best, Franz Beckenbauer, Zinedine Zidane, and countless more. They come from all parts of the world, different walks of life, and play with unique styles, but they all share a common quality. They all have tremendous skill, athleticism, and passion for soccer.

In the soccer game I will apply the physics in science. I will explain how momentum affect the play and its