Motion Analysis
Let's Move!
Squats and Jumps
Angular Motion
Sir Isaac Newton
100
The type of analysis of motion that describes how the human body "looks" on visual observation as it performs a skill or athletic movement.
What is the qualitative analysis?
100
The magnitude of the resultant velocity.
What is speed?
100
The type of acceleration when the athlete is slowing down while moving towards the ground (I to B) and speeding up while moving up (B to I).
What is positive acceleration?
100
Resistance of an object to having its state of angular motion changed.
What is the rotational inertia?
100
This law states that an object at rest or in motion at a constant velocity will remain in this state unless acted on by an external force.
What is the Law of Inertia (Newton's First Law)?
200
The approach of qualitative analysis of the deep squat with an FMS score of 3 in which the "torso is parallel with tibia or toward vertical."
What is the composite approach?
200
The perspective from which movement is described (or measured).
What is the frame of reference?
200
This is the vertical velocity of someone jumping at 5 m/s at an angle of 60 degrees.
What is 4.33 m/s?
200
The perpendicular distance between the joint's axis of rotation and the line of action of a muscle's force.
What is a moment arm?
200
sumF=m*a
What is the law of acceleration (Newton's Second Law)?
300
This quantity possess only a magnitude and has not particular direction associated with it.
What is a scalar quantity?
300
The change in linear velocity over time.
What is the linear acceleration?
300
The type of acceleration of an athlete who is slowing down when moving towards the ground during a squat as depicted here:
What is positive acceleration?
300
The shoulder joint angle in the sagittal plane that would maximize the torque induced by the dumbbell.
What is 90° flexion?
300
The point in this graph in which the vertical ground reaction force is equal to the jumper's weight.
What is a?
400
A system of linked rigid bodies subject to force application through which mechanical energy flows during human movement.
What is the kinetic chain?
400
Parts of a resultant vector, two or more vectors that are acting in different directions
What are components?
400
The type of acceleration of an athlete who is moving towards the ground at a constant speed during a squat as depicted here:
What is zero acceleration?
400
This is minimized when a runner flexes her knee during the swing phase of running, thereby maximizing the acceleration induced by muscular torque (i.e., hip flexors).
What is the radius of gyration (or moment of inertia)?
400
The time interval in this graph in which the jumper's COG would have positive acceleration while moving towards the ground (before take-off).
What is b and c?
500
The magnitude of the rotary component of a 100 N biceps force when the elbow is flexed at 90 degrees:
What is 100 N?
500
The elbow flexion angle when both the rotary and compression components of the biceps force are equal in magnitude.
What is 45 degrees?
500
The time interval in the following countermovement jump before take-off in which the athlete is speeding up in the upward direction (+ = up; - = down).
What is between c and d?
500
r*w^2
What is centripetal acceleration?
500
"Nursemaid's elbow" is a subluxation of the radial head caused by this center-seeking force when a child is swung in circles by their hands.
What is centripetal?