Forces and Motion
This force pulls all objects toward the Earth.
Gravity
What is a trajectory?
The path followed by a projectile through the air.
What is drag?
The force that opposes movement through air or water.
What is a skill?
A learned movement used to achieve a goal efficiently.
What are affordances?
Opportunities for action that emerge from the relationship between the performer and environment.
Newton's First Law is commonly known as this law.
The three factors affecting projectile motion are projection velocity, projection angle and ?
Projection height
What is the boundary layer?
The thin layer of fluid directly surrounding an object.
Two athletes practice the same skill for the same amount of time, but one learns it much faster because they possess superior reaction time and coordination. These underlying characteristics are known as what?
abilities
What are constraints?
The individual, task and environment are collectively known as these.
The product of mass and acceleration
Force
For a projectile launched and landing at the same height, the theoretical optimum angle is approximately?
45 degrees
What is lift?
The upward force generated by pressure differences around an object.
What are perceptual-motor abilities?
Balance, coordination and reaction time
What is exteroceptive information?
Information from the external environment detected through the senses.
The rotational equivalent of force.
Torque
Of the three projection variables, this has the greatest effect on distance achieved.
Projection velocity
What is the Magnus Effect?
This effect explains why a spinning soccer ball curves in flight.
In Welford's model, information first enters this stage.
Why is adaptive capacity important in sport performance?
Athletes must continually adjust movement solutions in response to changing constraints and affordances during competition.
A diver tucks tightly during a somersault to reduce this and increase angular velocity.
Moment of inertia
Explain why elite shot putters often release below 45°.
Because the ground is at equal height to the release height of the athlete
Explain how swimmers can reduce drag and improve performance when moving through the water.
Swimmers can reduce drag by adopting a streamlined body position, minimizing frontal surface area, and keeping the body aligned with the direction of travel. This reduces resistance from the water and allows them to move more efficiently and at higher speeds.
What is linear pedagogy?
This teaching approach assumes learning progresses through predictable stages with an ideal movement pattern.
A basketball player notices that a defender has shifted their weight onto one foot and immediately drives past them on the opposite side. From an ecological dynamics perspective, what concept best explains why the attacker was able to exploit this situation?
affordances