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# Throwing a Cricket Ball

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## Michael Stevens

on 19 September 2014

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#### Transcript of Throwing a Cricket Ball

Anatomy
Biomechanics
Science behind throwing.
Although this video is about baseball the same things applies to cricket.
Forces When Throwing
-Muscular
-Gravitation
-Aerodynamic
-Interia
-Centrifugal

Newtons First Law
Newtons first law is of Inertia. This states that an object at rest remains until a force acts to change its state of of rest.
This apply to cricket and throwing a ball as the ball will not move until the throw it and apply forces behind the ball. When the ball is in my hand it has stationary inerita. The arm acts as a large force and overcomes this. Once the force has been applied action occurs and the ball will be thrown.
Inter Relationships
I am able to analyse the inter-relationships of my skill by preforming the skill, filming it and then critique it. With this gained knowledge of my technique I was able to research the throwing action and apply this to my own action. I could then have practice sessions based around improving my technique. I could then film myself throwing again to see if I had made any improvements. This is one way of being able to move from the associative stage in the skill to the autonomous stage. When braking down my skill I could see I was making errors with my elbow position. When I release the ball my elbow is level or even sometimes below my shoulder. This restricts the amount of force being applied on the ball due to the less leverage I have. Breaking the skill down like this is called part learning. After learning my elbow is in the wrong position, I would practice throwing at a target for 10 minutes whilst videoing it. I would then look if my action had improved. I would keep doing this over and over until I execute this part of the skill automatically. This is called distributed practice. The second newton law interrelates with my poor elbow position, the second newton law states that; The acceleration of a body is proportional to the force being applied and the change in motion (acceleration) occurs in the direction that the force is applied. When my elbow is at level or below my shoulder I will not be able to gain the maximum amount of force so when I throw the ball it will be less affective and have less acceleration.To break down my throwing action I need to separate the action into three phases; prep phase, action phase and follow thorugh. When I throw the ball I really need to focus on getting my elbow higher mainly in the prep and action phases. The muscles that are used during these two faces of throwing are; Wrist Flexors, Bicep, Triceps, Deltiod and Latissimuss Dorsi. So when I am preforming the skill i need to focus on these muscles to keep my elbow above my shoulder, so I can move onto the autonomous stage in the skill.
Practicing Skill
on release
Throwing a Cricket Ball
Skill Learning
Newtons Second Law
Newtons second law is the law of acceleration. This states the acceleration of a body is proportional to the force being applied and the change in motion occurs in the direction that the force is applied. This applies to my skill of throwing a ball by the greater force I apply to the ball through my arm, the greater acceleration the ball will have.
Newtons Third Law
The third law is the law of action-reaction. This means for every action there is an equal and opposite reaction. When I throw the ball I am clearly applying force to it, this is the action. The reaction is the force that the ball is applying to my hand. When I throw the ball, the ball has a large acceleration but my arm doesn't accelerate backwards due to other forces being applied to it. The muscles in my arm counteract the reaction forces that are being applied.