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The units of measurement for force (which include weight, drag force, lift force, friction force, and vertical ground reaction force) are...
newton (N)
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The units of measurement for radius rotation, radius of resistance, and moment arm are...
meters (m)
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The units of measurement for linear speed and projectile speed are...
meters per second (m/s)
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The units of measurement for an angle are...
radians (rad)
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The units of measurement for angular velocity are...
radians per second (rad/s)
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The units of measurement for angular impulse are...
newton-meter-sec (N-m-s)
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The units of measurement for angular momentum are...
kilogram meter squared per second (kg-m2/s)
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The units of measurement for angular inertia are...
kilogram meter squared (kg-m2)
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The units of measurement for torque are...
newton-meter (N-m)
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Which of the following is/are force(s) that influence the movement of a projectile when it is in air?
- weight (W)
- drag force(Fd)
- lift force (FL)
the second letter in drag force and lift force is a subscript
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Which of the following describe a "change in a factor" that would increase a projectile's maximum vertical height?
- projectile speed
- projectile angle
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Which of the following describe "a change in a factor" that would increase a projectile's maximum horizontal distance?
- projectile speed
- time in air
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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
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Fill in the blank: "A body's total _______ is the result of an optimal combination of individual joint linear speeds."
linear speed
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During a jump, ankle plantar flexion results in an increase in linear speed of the following joints
all joints superior to the ankle
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During a jump, knee extension results in an increase in linear speed of the following joints
all joints superior to the knee
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During a jump, hip extension results in an increase in linear speed of the following joints
all joints superior to the hip
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"The straight-line distance from a joint/body axis of rotation to a point on a body segment" is the definition of...
radius of rotation
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"The speed of joint/body rotation" is the definition of...
linear speed
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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
and/or
radius of rotation
(JAVROR)
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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 (Tj) 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)
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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 (Fm) pulling on the bones that are held together at the joint
and/or
an increase in the moment arm (dma)
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