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The physics of soccer
How physics affect soccer
The physics of soccer
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Introduction Soccer is the world’s most popular game. Soccer is played in grass fields all around the world, each teams have 11 players. The objective of soccer is to score more goals than the other team by kicking the ball around the field and into the goal. There is a lot of physics behind soccer. For example, kicking a ball relates to friction, momentum and aerodynamics. Potential Energy Potential energy is gravity pulling things down, on earth something gets pulled down approximately 9.8 metres per second. The formula for potential energy is PE=mgh with g being the acceleration of something falling due to gravity. In soccer, potential energy relates to when a player jumps and gravity pulls them back down and when a ball is kicked in …show more content…
the ball and then due to gravity it comes back down. Kinetic Energy Kinetic energy is the energy of an object during its motion, it is the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes (1). In soccer, kinetic energy relates to anything that moves. The formula for kinetic energy is ke=1/2mv2 , m stands for mass, v stands for velocity and ke stands for kinetic energy and is expressed in joules. If you were to work out a player’s kinetic energy and they weighed 100kg and their velocity was 10m per second it would equal 1/2x100x102 = 5000joules. Momentum Momentum, velocity of an object times it mass. When soccer players kick the ball they transfer their momentum to the ball. Soccer players also want a lot of control over the ball when they play so, using their feet or body they slow the momentum of the ball by resisting it slowly and not putting all their power and weight into it. The formula for momentum is kg x m2, kg represents kilogram and m stands for metres. For example, if a player weighed 100kg and covered 10 metres per second it would equal 10,000kg.mp/s. Inertia The Law of Inertia is Newton’s first law. The law explains that “any object at rest, will tend to stay at rest and any object in motion, will tend to stay in motion unless acted on by an unbalanced force.”2 In soccer the unbalanced force is the player’s foot. The foot kicks the ball the ball will continue to move until stopped by friction or the Earth’s gravitational pull. If the ball is not kicked it will be resting and continue to stay at rest until kicked. Aerodynamics Aerodynamics in soccer relates to the flight path of the ball when it is in the air and how the air affects it.
When a ball is kicked it into the air there is a drag force opposite to the ball direction, a “magnus” lift force and the spin direction of the ball. Velocity/Speed Speed is the rate of change of distance and not in a straight-line. So for example, when a soccer player runs around in a curve like way to get around opponents it relates to speed. Velocity is the rate of change of displacement and relates to running in a straight line. For example, when a player receives a through ball he runs in a straight line after the ball. Acceleration When playing soccer players need to accelerate a lot in order to get to the ball first when it comes near them. The increase in speed is very important as it will make or break whether they get to the ball first or not which can influence weather their team scores a goal or concedes a goal. Newton’s Laws of Motion “For every action, there is an equal and opposite reaction”2 this is Newton’s last law of motion. In soccer, this means that if you kick the ball, it would resist your force just as hard. This is done by when you kick you compress the air in the ball. The air then comes out causing the ball to go off the foot and into the flight path of the …show more content…
ball. Friction Friction occurs when two opposite forces come in contact with each other. Friction is the reason why a soccer ball slows down after it’s kicked. When the ball is kicked there is always a force parallel and there is also one opposite of the ball which is friction. When the ball is kicked on the ground the grass resists the ball. When the ball is in the air, the air also resists the ball. Forces at Work Newton’s second law says that “the change in velocity (acceleration) with which an object moves is directly proportional to the magnitude of the force applied to the object and inversely proportional to the mass of the object.”2 This law can be explained by the equation F=ma.
(a) Stands for acceleration of the ball which is determined by the force applied (F) times by the mass of the object that is being moved (m). This pretty much means that if the ball has a lot of mass, it will require more force to kick the ball hard. If the ball has little mass, it will require little force to kick. This means that if you want to kick the ball hard you need to apply quite a bit of force and if you don’t want to kick it hard you must then apply less
force. Work The formula for work is w=mad. In this formula (w) represents work in watts, (m) represents mass in kilograms, (a) stands for acceleration and (d) stands for distance in metres. A scenario related to this from soccer is when a player receives the ball he then kicks it in front of him 10m to run onto. He weighs 70kg and his average acceleration is 5m/s2 and then he runs the 10m to get to the ball. 70x5x10 = 3500W
Soccer is a game that is played a lot on angles and measurements. Most wouldn’t think that angles come into play when playing soccer, they just kick it into the goal wherever they can. To make a good, precise shot, you must take into account where you are in relation to the goal, and decide what angle would be the best to aim and kick for. Where the kicker is standing in correlation to the goal plays a major factor on the difficulty of the shot. Also, if the kicker is a left or right footed kicker and what side of the goal they are on also plays an important factor...
Over the years soccer has suffered lots of changes but the thing that has changed the most are the soccer balls that had been used before soccer even existed as the Greeks used to play to carry and kick a ball, the medieval would do the same but they would not let the ball fall to the ground and the Chinese that used to carry a ball around a net stretched between two poles. The soccer ball did not even have a round shape as they used pigs’ bladders so the ball would be the same shape but with stitched up cloth or leather for better shape retention but the problem was that the more irregular the bladder the more unpredictable the behavior of the soccer ball would be when kicked. Now the soccer ball has evolved so much that these days the new soccer ball that it is going to be used for the World Cup (Brazuca) is not even stitched any more it is joined by thermal bonding which makes the ball waterproof and the weight will only increase by a 0.2% of its original weight. In this essay I’m going to talk about the evolution of the soccer ball and the new technology that is being implemented.
Friction is a huge factor when considering the game of soccer. When a soccer ball is moving along the field there is constantly a frictional force working in the opposite direction of the balls movement. There is an equation that can be used to find the friction force working against the ball and it is f=mN. This is where f is the frictional force, m is the coefficient of friction, and N is the normal force pointing upward. The coefficient of friction is dependant upon the surface type and ball being used, it is not a constant. This tells us that the coefficient of friction will cause the ball to roll slower when it is large and not as slow when it is small. This also shows that the more friction there is between the ball and the field the slower the ball will roll.
Football can be seen as a boring sport to many. One must score by kicking the football in between the field goal posts. However, the skill of kicking can be challenging. Kicking the football incorrectly can lead to inaccuracy, a turnover of the football, or a missed goal scoring chance. It can also show how unskilled one may be in the sport. By effectively learning these steps, one can learn how to properly kick a football to improve his or her ability.
This investigation aims to determine the ideal air pressure inside and the ideal material of a ball in order for that ball to achieve its greatest bounce height. This report will be focusing on how the air pressure and material of a soccer ball, basketball and volleyball affects the bounce height of each ball.
When a soccer ball is kicked the resulting motion of the ball is determined by Newton's laws of motion. From Newton's first law, we know that the moving ball will stay in motion in a straight line unless acted on by external forces. A force may be thought of as a push or pull in a specific direction; a force is a vector quantity. If the initial velocity and direction are known, and we can determine the magnitude and direction of all the forces on the ball, then we can predict the flight path using Newton's laws.
Soccer the most popular sport in the world, since is the sport with more active players with around 270 million athletes. By having registered so many players, it’s not surprising that this sport has more fans than any other sport worldwide. Every team looks for a player that moves the ball, and that creates plays to score. This means a person that pass the ball through the entire game. To pass the ball in a proper way is one of the main skills a player needs to play soccer. Passing the ball, keeps the game going. Without being able to pass the ball accurately to your teammates, more than likely your team won’t be able to score a goal. The key for passing is to keep things simple. This means passing the ball to your nearest teammate that is not marked by an opponent.
A game enjoyed by millions of people each year isn’t just about scoring points and big hits; there is a strong scientific presence behind all of it. Physics plays a major role in the game of football because of the constant collisions between to players on every play of the game. Different parts of the game can be broken down into areas such as kinematics, projectile motion, Newton’s Laws, and torque.
There are many aspects to the game of basketball and physics can be applied to all of them. Although to be good at basketball it is not necessary to play it from a physics point of view. Basketball players become good by developing muscle memory for the actions that must be performed in the game of basketball from years of practice. Nevertheless knowing some of the physics in the game of basketball can help a good player be a better player. In this paper I will cover the three most important aspects of the game, shooting, dribbling and passing.
F = ma : where F is force; m is the mass of the body; and a is the acceleration due to that particular force
There is no question that everything people do in their lives involves physics. This is true from the way we communicate to the way that we fight wars. In some cases the influence of the laws of physics on our world are extremely apparent, such as in sports. Basketball, hockey, baseball and even cricket involve physics. From the most basic motions players perform in the game, to different plays designed by coaches, physics touches it all. These appearances of physics in the games that we play are sometimes so subtle we don’t even notice them. In other cases however, the impact of physics can be heard across the stadium as Jerome “The Bus” Bettis barrels his way into the endzone. The influences of physics on the game of football are probably more apparent than in any other sport. By examining these effects in football, such as the motion of players, the motion of the ball, the sounds and sights of the game, and the excruciatingly painful collisions, it will be evident that the laws of physics have played a primary role in the way the game has developed.
Physics is a part of everyday life. It is evident in the modern technological devices we use in every day experiences and objects around us. Although physics is understood to be only useful in the classroom, physics can also be applied to one the most popular activities on the planet, basketball. Whether jumping for the ball, or leaping for a slam dunk, the human body follows the same laws of projectile motion as do other objects. The sport that includes shooting, passing, running, and dribbling involves topics covered in physics such as force, friction, effects of air resistance, velocity, air pressure and energy. Basketball also involves factors such as projectile motion in making a basket, gravity and its effects on passing and dribbling, and Newton’s First and Third Law on passing and a number of others.
First of all, there are many different ways for kicking a ball. It all depends whether you want to pass the ball, kick the ball with power, curve the ball or if you want to chip the ball (kicking it in such way that you lob the the ball over an opponent). It all depends where you hit the ball,
When playing sports and games like soccer, football or track and field no one takes the time to realize what goes into it. When a person stops, takes a step back and look from an outside perspective a person will see that physics goes a lot into it playing a sport. It applies sports science and insights to the sports news a person sees every day, along with training and performance challenges a person will face regardless of the type of sport or the level a person can compete at. From recreational athletes to elite Olympians, people are inspired by and they want to be able to push themselves to the greater heights, distances and speeds. Physics in sports will be able to answer questions, optimize strategies and will be able to show some light on the invisible and visible barriers to performance. Remember these terms, acceleration, force, velocity and speed. They are defined as rate of change of velocity with respect to time is acceleration; force is influence on a body that causes it to change speed or direction; speed and direction that an object travels is defined as velocity, and lastly speed. Speed is how quickly an object moves by the distance traveled divided by the elapsed amount of time.
relates to the physics of motion, the physic of friction. And by learning the physics behind soccer, any player can become a much better soccer player. Soccer is a sport for both girls and boys. When playing soccer you use all of your muscles and it contains a lot of running and you get very