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Physics of Volleyball.

Amber and Hannah's science project.

amberlynn perkerson

on 26 February 2013

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Transcript of Physics of Volleyball.

The Physics of Volleyball. By: Amber & Hannah What is the physics of something? How do Newtons Laws affect volleyball? Can speed determine where the ball goes? If the rules in volleyball were different, would you be able to play with more force, speed, and momentum? If you know the physics of something, does that mean you know how to play the sport, why? How does knowing force and speed change how you play volleyball? If you have the mass of the ball and velocity, can you determine the momentum of the ball? The science that deals with matter, force, energy, and motion. Newton's First Law:
Part 1: An object at rest will remain at rest unless acted upon by an unbalanced force.
In volleyball: The ball will not go anywhere until someone serves it.

Part 2: An object in motion will remain in motion in a straight line at a constant speed unless acted upon by an unbalanced force.
In volleyball: Once served the ball will travel in an arc due to earth's gravity but will go in one direction only unless someone hits it to change its direction or speed. Then it will continue in the new direction and speed until someone else hits it. Speed doesn't determine where the ball goes but it is one of the key concepts of how far it lands. The angle and force applied by the player determines how high and where the volleyball will go. Speed only determines how fast it will get there and the distance it will go because it builds up momentum. Knowing force can change the way you play volleyball because when you see the ball coming to you then you automatically start thinking how much force is necessary to stop the motion of the ball and to direct it back over the net. Knowing the speed can also help your volleyball playing experience because when the ball is coming at you the speed at which it is coming is an important factor in how much force you need to apply to counter it. The rules in volleyball are tied to the amount of force, speed, and momentum. It depends on what the rules are to say that the force, speed, and momentum would be different or not. If the game were changed to seeing how far someone could hit the ball the force, speed, and momentum would need to be changed. But truly the player chooses the amount of force and that affects the speed and momentum. If you know the physics of something, it does mean you know how to play the sport. This does not necessarily mean that you will be good at the sport. If you have never played the sport before, and learn the physics and then play for the first time, it will change your thinking. Most players just want to hit it over, and do a powerful serve, if you know the physics, you will be thinking of what angle, how much force, the amount of momentum on the ball, how you as an unbalanced force will stop the powerful volleyball, your thinking and strategy will be totally different, because you know the physics of the sport. Yes, you can find the momentum on the ball, and you can put the amount of momentum on the ball, when you know the mass of the ball and velocity. This may take some practice, because you have to apply and determine how much momentum you want, this takes practice, but once you get it down, it will improve your game dramatically. Is volleyball about hitting the ball at the right angle, why? In volleyball hitting the ball is a key factor in directing the ball. You have to hit the ball at the right angle to get it over the net. But, if you do not apply enough force to the ball it won’t make it over the net and to the other side. So volleyball is a mixture of force, speed, and angles. Definitions: Acceleration: the act of accelerating; a change of speed or velocity
Motion: the action or process of moving or changing place or position
Mass: the weight of something
Velocity: how fast the ball moves from one place to another
Displacement: the change of position of something
Force: the push or pull upon an object resulting from the objects interaction with another object
Power: the rate at which energy is consumed
Momentum: the quantity of a moving body, measured as a product of its mass and velocity
Gravity: the force of attraction between masses
Speed: how fast an object is moving
Energy: the strength or vitality required for sustained physical or metal activity Newton's Second Law:Force equals mass times acceleration: f = m X a
In volleyball: The harder you hit the ball the faster it will go it whatever direction you hit it. Also, the ball won’t go over the net unless you hit it hard enough. Also, if you hit the ball too hard it will go out of bounds. Also, a lighter ball will go farther and faster than a heavier ball. Newton's Third Law: For every action there is an equal and opposite reaction.
In volleyball: The ball hits your hand just as hard as you hit the ball. To avoid injuring your fingers, hold your hand in the proper position. Also, to make the ball go where you want it to go your must hit it in the proper spot with the proper force. When you are trying to direct the ball, a player looks at the other team and searches for an open area in which they could hit the ball. Then they raise their arms and hit it. They could be serving, setting, or bumping. They need force and power to get the volleyball over the net but they also have to hit the ball at the right angle to get it to the place they had in mind. Is volleyball about the force, speed, or power when you are trying to direct the ball? How did Newton discover these laws? Isaac Newton discovered his laws of motion at the age of 24. Newton is considered one of the greatest Mathematical geniuses ever. Newton discovered three laws of physics, which predict motion from the swinging of a pendulum to the motion of planets and galaxies. It is believed he first started studying the affects of gravity after watching an apple fall. Can different angles make the speed/momentum different? In volleyball angles only matter to direct the ball. They don’t affect the speed or momentum. The speed and momentum are affected by the amount of force applied to the ball. Does your positioning change the physics of the sport, or does it keep it the same, why? The positioning changes the physics of the sport because if you are standing far away from the net you need much more force. If you are standing close to the net much less force is required. The angle you hit it at can also be affected. If the volleyball was a different weight/ shape would this change the motion/momentum of the volleyball? Yes. It would require more or less force to get the ball over the net and that would affect the momentum the ball builds up as it gains speed. The motion in which you hit it could remain the same depending on the shape of the ball. What is the relationship between the force of a spike and the acceleration of the ball? In Newton’s first law it says the spiker’s hand, the net and the blocker's forearms were acting as an unbalanced force that stopped or changed the direction of the ball, also known as the object in motion.Newton's second law of motion is a mathematical equation that explains the relationship between force, mass and acceleration. Mass multiplied by acceleration equals net external force. A hard fast spiked volleyball creates a net external force this stings your hands and arms when you try to stop it. Your hands hurt even more when you stop a ball hit by a different, stronger opponent. The harder-hit volleyball the higher acceleration rate results in a stronger net external force; therefor your arms and hands feel the impact. Newton's third law explains that every action creates a force that is met by an equal reaction force from the opposite direction. When two objects interact, they exert a force on each other. The action force of a spiked ball meets the reaction of the force from the player’s block. A team scores a point when the action force of the ball meets the reaction force of the other team's court. Because the floor is so hard it has more force than the volleyball, because it is so soft, so the ball bounces off the court to equalize the reaction of the impact. The bigger the bounce the more force the spike had. How can you put the amount of momentum that you want when you hit the ball? Momentum is a very common used term when it comes to sports. Momentum is a physics term; it refers to the quantity of motion that an object has. Momentum means, “mass is motion.” You can find momentum by Momentum = mass • velocity. If you know the mass of the volleyball, and the velocity, you can determine how much momentum you want to put on the ball. Can you apply the amount of force on the ball, to direct it where you want? How is this possible? Without force the ball could not get over the net, but you cannot direct the ball with force. When it comes to directing the ball you have to use angles, force, power, etc. Without one of these components, you could not direct the ball, but they work as a team and they need each other to work. What are the different elements in volleyball, and how do the come together to make a sport? Forces, acceleration, gravity, projectile motion, power, mass, displacement, velocity, momentum, speed, and other things make volleyball the game that it is. Volleyball is one of the many sports that includes many aspects of Physics some of these are very basic concepts and others are more advanced. A better understanding of these concepts could improve the player’s game. Physics explains the basic fundamentals of the game called volleyball or any sport/thing you are talking about, and why you should perform them in this way when you play or act upon such things. What determines where the ball is going to go, can this be changed by angles, or force? Force, angles, momentum, power, all determine where the ball will go. You have to find out how to control all of these concepts, so you can put the ball anywhere you want. Volleyball is like a cake, and without one ingredient, and not the right measurements the cake will not turn out. You have to determine the amount you put in, and all of the ingredients, to know the physics of volleyball. Does the size of the court change the amount of force or momentum you can put on the ball? How come? If the ball was the size of a football field, yes it would change the amount of force, and momentum you would put on the ball. Imagine how much force you would need to serve it over the net if it was the size of the football field. The force and momentum would change depending on the size of the court. The court could be very small or very big. Depending on the change of a small court or a big court it would determine the amount of force and momentum you would put on the ball. Does the height of the net change the amount of force you put on the ball? Why? Yes the height of the net determines how much force you put on the ball. If the net were really high, you would need lots of force to put on the ball. If the net were really short, you would need little force to get it over. This will determine how much force you put on the ball. THE END.
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