Yr13 Physiology Flashcards
What is fluid mechanics
Object or human that travels through any liquid or gas
What is drag force
Air resistance and friction
A force that slows something down
Negative effect on velocity
Two types of drag
Surface drag-friction between surface and fluid environment
Form drag- fluid environment on an object
Factors that reduce drag
Streamlining
Lower mass
Sporting technology
Factors that increase drag
Higher velocity
Larger cross sectional area
Larger mass
Newton’s first law
States that an object will remain stationary or continue at constant velocity unless acted on by an external force
Newton’s second law
States that acceleration of an object is directly proportional to the net force acting upon it
F=MxA
Newton’s third law
For every action there is an equal and opposite reaction
What is angular motion
Motion of a body about a fixed point or axis
What is angular velocity
Speed of rotation
Acceleration formula
Change in velocity/time
Momentum formula
Mass x velocity
Internal forces
When skeletal muscles contract
External forces
Comes external to the body e.g friction
Horizontal forces
Air resistance and friction
Impulse
Time taken for a force to be applied to an object or body
Impulse = force x time
Principles of training
Specificity
Progressive overload
Reversibility
Recovery
FIIT principles
Frequency
Intensity
Time
Type
Periodisation
Dividing year into blocks and cycles to achieve a peak at perfect time
Macrocyle
Preparation-involves general conditioning
Competition- where performer refines skills
Transition- rest and recovery stage