Basic Biomechanics 8th Edition By Susan – Test Bank
Chapter 11 Angular Kinematics of Human Movement
1) If angular acceleration is constant, then angular velocity must be
A) constant.
B) increasing or decreasing.
C) equal to zero.
D) none of these answers is correct.
Answer: B
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2) The component of angular acceleration directed toward the center of curvature defines what?
A) radial acceleration
B) tangential acceleration
C) angular acceleration
D) linear acceleration
Answer: A
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3) What quantity will have the following units: rad/s?
A) linear displacement
B) angular displacement
C) linear velocity
D) angular velocity
Answer: D
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4) Which of the following terms describes the location of the center of rotation at a joint at a given instant in time?
A) precise center
B) exact center
C) instant center
D) none of these answers is correct
Answer: C
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5) Which angular direction is conventionally regarded as positive?
A) clockwise
B) counterclockwise
C) flexion
D) extension
Answer: B
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6) Which of the following is/are true regarding a radian?
A) it is equal to 57.3 degrees
B) it is the size of the angle subtended by an arc of radius length
C) it is a unit of angular displacement
D) all of these answers are correct
Answer: D
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7) Which of the following expressions defines angular velocity?
A) change in angular position over a given time
B) angular displacement divided by time
C) both change in angular position over a given time and angular displacement divided by time
D) neither change in angular position over a given time nor angular displacement divided by time
Answer: C
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8) Which of the following is not a valid unit of angular velocity?
A) radians per second
B) revolutions per minute
C) degrees per hour
D) gradients
Answer: D
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9) Which of the following are scalar quantities?
A) angular distance
B) angular velocity
C) both angular distance and angular velocity
D) neither angular distance nor angular velocity
Answer: A
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10) Which of the following quantities are equal?
A) 2π radians and 360°
B) 270° and 3/4 revolution
C) both 2π radians and 360° and 270° and 3/4 revolution
D) none of these answers is correct
Answer: C
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11) If the knee joint goes through 100° of flexion during the down phase of a squat, what is the total angular distance during 10 complete squats?
A) 1000°
B) 2000°
C) 0°
D) none of these answers is correct
Answer: B
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