Biomechanics Flashcards
Linear motion
Motion in a straight or curved line, with all body parts oving the same distance at the same speed in the same direction
Newton’s first law
A object will remain in motion o at a constant speed unless acted on by another force
Sporting examples of Newton’s first law
Inertia
The resistance an object has to a change in its state of motion
How to calculate force
Force = Mass x Acceleration
Newton’s second law
(Acceleration)
The momentum of a body is proportional to the force causing it
Sporting examples of Newton’s second law
Newton’s third law
Every action has a equal and opposite reaction
Sporting examples of Newton’s third law
Ground reaction force
What measurements used in linear motion
- Speed
- Distance
Speed
How is speed is calculated
Distance
How is distance calculated
Centre of mass
Line of gravity
What are the factors affecting stability
The height of the centre of mass
Position of teh line of gravity
Area of the support base
Mass of the performer
Levers
Fulcrum
Resistance/Load
Effort
First class lever system
Sporting example of a first class lever system
Advantages of a first class lever system
Disadvantages of a first class lever system
Second class lever system
Sporting example of the second class lever system
Advantages of a Second class lever system
Disadvantages of a Second class lever system
Third class system
Sporting examples of third class
Advantages of a Third class lever system
Disadvantages of a Third class lever system
Effort arm
Mechanical advantage
Resistance arm
Mechanical disadvantage
