Biomechanical movement Flashcards
Acceleration
The positive change in velocity of an object
Air resistance
An opposing force that exerts itself upon a body moving through the air
Centre of mass
The point at which the total body mass is concentrated
Effort arm
The distance from the effort to the fulcrum
Effort
The force that is needed to move the load
Fulcrum
Where the rotation or movement of the lever takes place
Inertia
The resistance of an object to change its current state of motion
Load arm
The distance from the load to the fulcrum
Load
Any weight that needs to be moved in a lever system
Momentum
The quantity of motion that is taking place in a moving object
Newton’s first law
An object stays in a constant state of motion unless acted upon by an external force
Newton’s second law
An object will accelerate in the same direction as the force applied upon it, and the amount of acceleration is directly proportional to this force
Newton’s third law
For every action there is an equal and opposite reaction
Reaction
The equal and opposite force acting in the opposite direction to the force being exerted
Stability
An object’s resistance to changing position
Weight
The force of gravity acting on an object
Angular momentum
The amount of angular motion of an object.
Angular motion
The motion of an object around a fixed axis.
Angular velocity
The rate of angular displacement of an object.
Angular displacement
The difference between the start and final position of a rotating object.
Angular acceleration
The change in angular velocity over time.
Bernoulli’s principle
The effect that the surrounding flow and pressure of air have on a projectile.
Displacement
The total change in an object’s position, in respect to its start position.
Distance
The total length of the space between a start and end point.
Gravity
The force that attracts any object with mass towards the Earth.
Linear motion
The centre of mass of an object moving along a straight line.
Mass
The amount of matter of an object.
Moment of inertia
The resistance of an object to change its current state of rotational motion.
Non-parabolic flight path
An asymmetrical flight path.
Parabolic flight path
A symmetrical flight path.
Projectile
An object which is propelled forward through the air by an external force.
Scalar quantities
Measurements that are only concerned with size or amount of something.
Speed
The rate at which an object travels a specific distance.
Vector quantities
Measurements that attribute a direction and a magnitude.
Velocity
The rate at which an object undergoes displacement
Weight
The force that gravity applies to an object.
