Home > Preview
The flashcards below were created by user
Anonymous
on FreezingBlue Flashcards.

The units of measurement for force (which include weight, drag force, lift force, friction force, and vertical ground reaction force) is the...
newton (N)

The units of measurement for radius rotation, radius of resistance, and moment arm are...
meters (m)

The units of measurement for linear speed and projectile speed are...
meters per second (m/s)

The units of measurement for an angle are...
radians (rad)

The units of measurement for angular velocity are...
radians per second (rad/s)

The units of measurement for angular impulse is...
newtonmetersec (Nms)

The units of measurement for angular momentum is...
kilogram meter squared per second (kgm2/s)

The units of measurement for angular inertia is...
kilogram meter squared (kgm2)

The units of measurement for torque are...
newtonmeters (Nm)

Which of the following is/are force(s) that influence the movement of a projectile when it is in air?
 weight (W)
 drag force ()
 lift force ()

Which of the following describe "a change in a factor" that would increase a projectile's maximum vertical height?
 projectile speed
 projectile angle

Which of the following describe "a change in a factor" that would increase a projectile's maximum horizontal distance?
 projectile speed
 time in air

Which of the following describe "a change in a factor" that would increase a projectile's time in the air?
 projectile speed
 relative projection height
 projection angle

"A body's total _______ is the result of an optimal combination of individual joint linear speeds."
linear speed (s)

During a jump, ankle plantar flexion results in an increase in linear speed of the following joints
all joints superior to the ankle

During a jump, knee extension results in an increase in linear speed of the following joints
all joints superior to the knee

During a jump, hip extension results in an increase in linear speed of the following joints
all joints superior to the hip

"The straightline distance from a joint/body axis of rotation to a point on a body segment" is the definition of...
radius of rotation

"The speed of joint/body rotation" is the definition of...
angular velocity (ω)

Based on the "Linear Speed  Angular Velocity Principle" which of the following describes "a change in factor" that would increase the linear speed of a point on a rotating body?
joint angular velocity (ω)
and/or
radius of rotation ( )
(JAVROR)

Based on the "Angular Impulse  Momentum Principle" which of the following describes "a change in factor" that would increase the angular velocity of a body segment?
an increase in joint torque ( ) applied to the body component
and/or
an increase in application time (t) of the joint torque
and/or
a decrease in the body component's angular inertia (I)

Based on the "Joint Torque Principle" which of the following describes "a change in factor" that would increase joint torque?
 an increase in a muscle force
 () pulling on the bones that are held together at the joint
and/or
an increase in the moment arm ( )

Based on the "Angular Intertia Principle" which if the following describe "a change in factor" that would decrease a body segment's angular inertia (i.e., its resistance to angular motion)?
a decrease in in the body component's mass (m)
and/or
a decrease in the radius of resistance ( )

"For any muscle to create its greatest amount of muscle force, an oppositely directed external force of equal magnitude must exist" is an interpretation of...
the Action  Reaction principle

"Whenever your body is in contact with the ground, there are two __________ (one vertical and one horizontal) that can oppose the muscle forces created inside the body."
ground reaction forces

"________ is the horizontal ground reaction force between the soles of your shoes and the ground."
friction force

The coefficient of friction is a number that represents the material properties of the soles of your shoes that influence friction force. The coefficient of friction is influenced by the following:
hardness/softness
and
smoothness/roughness

Based on the "Friction Force Principle" which of the following describes "a change in a factor" that would increase Friction Force?
an increase in the coefficient of friction (μ)
and/or
an increase in the vertical ground reaction force( )

Which of the following factors does not affect the magnitude of the friction force generated between the soles of your shoes and the ground?
contact area

Assuming the vertical ground reaction force does not change, the largest amount of friction would be generated by shoe sole materials that are...
soft and rough

How does pushing downward against the ground during running increase the friction force between the soles of your shoes and the ground?
vertical ground reaction force ( )

