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# Physics of Volleyball.

Amber and Hannah's science project.
by

## 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.