Core 2 - CQ3 Biomechanics Flashcards
What are Biomechanics?
They are a science concerned with forces and the effect of these forces on and within the human body
What are the 5 principles of motion?
Linear motion
Speed
Velocity
Acceleration
Momentum
What is Linear Motion (POM)?
One dimensional motion - Movement in one direction
(Gliding)
What is speed (POM)
How fast something is moving in one direction (Sprinting)
What is Velocity (POM)?
The rate of positional change of an object (Changing directions)
Displacement/The time taken
What is Displacement (POM)?
The movement of a body from one location to another
What is acceleration (POM)?
To be able to increase speed quickly
What is Momentum (POM)?
The power when the body is moving (Tackle in rugby)
M = Mass*Velocity
What are the 3 principles of Balance and Stability?
Center of Gravity
Line of Gravity
Base of Support
What is the Center of Gravity (COG) (POBS)?
The point which all the weight is evenly distributed and balanced (Stomach when standing straight)
The lower the COG, the more stable
What is the Line of Gravity (LOG) (POBS)?
A vertical line passing through the centre of gravity (Skiing)
The direction the gravity is acting on the body
What is the Base of support (POBS)?
The area surrounding the outside edge of the body when contact is made
Sustaining balance on something (Gymnastics)
What are the Laws of Motion?
Inertia, objet will be stationary with no force acting on it (Same velocity)
F=ma, Force = Mass*Acceleration
For every action, there is an equal and opposite reaction
How does the body apply force?
To move, we apply equal and opposite reaction forces on the surface
Our muscles generate force by manipulating the gravitational force on the body
How does the body apply force?
To move, we apply equal and opposite reaction forces on the surface
Our muscles generate force by manipulating the gravitational force on the body
