Motion and Biomechanics Flashcards
Type of Motion: A______
Name and Explain
Angular
Motion occurring round a fixed point (axis of rotations)
Type of Motion: L_____
Name and Explain
Linear
Motion occurs in a straight line
Type of Motion: G______
Name and Explain
General
Combination of linear and angular
Define motion
Continual change in position of the body
Biomechanics: Balance
When the body is at a state of equilibrium and relies of supporting biomechanics to remain inside the base of support
Biomechanics: Base of Support
Area beneath an object or person and is every point of contact
Biggest base of support: lying down on the floor
Biomechanics: Transfer of Weight
Moving weight between body parts
Full weight transfer: walking, fruit-bat jump etc
Partial weight transfer: standing on one leg and then equalling the weight between two legs
Biomechanics: Centre of Gravity
Weight is evenly distributed throughout the body, when the body transfers weight the centre of gravity moves
Stability define
The ability to maintain balance
Posture and body alignment
3 primary body weights - skull, thorax (ribs) and pelvis that are aligned over one another
Standing in parallel
Correct alignment means that the weight is carried in the bones rather than the muscles, decreasing the risk of injury.
Newtons 1st Law
An object in motion stays in motion unless acted upon by another force.
Newtons 2nd Law
The amount of acceleration when an unbalanced force acts on a body is proportional to the size of that force
Newtons 3rd law
For every action there is an equal and opposition reaction
