Kinetic Concepts for Analyzing Human + Exam Questions Ch.3

Basic Biomechanics, 8e (Hall)

Chapter 3 Kinetic Concepts for Analyzing Human Motion

1) Which of the following defines center of gravity?

A) intersection of the 3 cardinal planes

B) the point around which a body's weight is equally balanced regardless of body position

C) both intersection of the 3 cardinal planes and the point around which a body's weight is equally balanced regardless of body position

D) neither intersection of the 3 cardinal planes nor the point around which a body's weight is equally balanced regardless of body position

2) Which of the following relationships is correct?

A) 1 kg = 2.2 lb

B) 1 lb = 4.45 N

C) both 1 kg = 2.2 lb and 1 lb = 4.45 N are correct

D) neither 1 kg = 2.2 lb nor 1 lb = 4.45 N is correct

3) Which of the following relationships is correct?

A) m = F/a

B) F = m/a

C) a = m/F

D) None of these answers are correct.

4) Which of the following statements is true?

A) weight is always a force

B) force is always a weight

C) pressure is synonymous with force

D) pressure is synonymous with weight

5) Which of the following is a correct unit of pressure?

A) Newton's

B) kg/cm2

C) N/cm2

D) slugs

6) Which of the following characteristics of a vector represents magnitude?

A) its angle of orientation

B) its length

C) its direction

D) All of these answers are correct.

7) Which of the following types of force act parallel to a surface?

A) shear

B) compression

C) tension

D) All of these answers are correct.

8) Which of the following types of force exerts a squeezing effect on the body?

A) shear

B) compression

C) tension

D) All of these answers are correct.

9) Which of the following quantities is calculated the same as pressure?

A) stress

B) strain

C) shear

D) tension

10) Which of the following is a correct unit of torque?

A) N-m

B) N/s

C) Ns

D) kg m

11) Which of the following is/are true regarding a shot put and a softball of equal diameter?

A) they have the same volume

B) they have the same density

C) both they have the same volume and they have the same density

D) None of these answers are correct.

12) The "rotary effect created by an eccentric force" defines what?

A) torque

B) moment of force

C) rotary force

D) All of these answers are correct.

13) Which of the following is/are scalar quantities?

A) force

B) mass

C) velocity

D) All of these answers are correct.

14) The "quantity of matter composing a body" defines what?

A) weight

B) momentum

C) mass

D) inertia

15) Inertia is directly proportional to which quantity(ies)?

A) mass

B) force

C) acceleration

D) All of these answers are correct.

16) A free body diagram includes which of the following?

A) sketch of an object, body, or body part being analyzed

B) vectors representations of all forces acting on the system

C) both sketch of an object, body, or body part being analyzed and vectors representations of all forces acting on the system

D) None of these answers are correct.

17) In a free body diagram of the human body, where would the vector representing weight of the body originate?

A) contact between the feet and the ground

B) center of gravity

C) head

D) need more information

18) Which of the following is true regarding volume?

A) units are cm3

B) units are liters

C) directly proportional to mass

D) both units are cm3 and units are liters

E) All of these answers are correct.

19) The formula for torque includes force and what other variable?

A) perpendicular distance from the axis of rotation

B) moment arm

C) force arm

D) all of these answers are correct

20) A bending force can result in which of the following types of stress?

A) compression

B) tension

C) torsion

D) both compression and tension

E) All of these answers are correct.

21) When injury results from a single large force application, such as a tackle, the injury is usually termed what?

A) acute

B) chronic

C) repetitive

D) All of these answers are correct.

22) Which of the following is the angular equivalent of linear force?

A) pressure

B) stress

C) torque

D) tension

23) Choose the term that describes the tendency of a body to resist a change in its state of motion.

A) impulse

B) inertia

C) mass

D) net force

24) Choose the term that describes the quantity of matter contained in an object.

A) impulse

B) inertia

C) mass

D) net force

25) Choose the term that describes the force per unit of area over which a force acts.

A) pressure

B) repetitive loading

C) scalar

D) shear

26) Choose the term that describes the mass per unit of volume.

A) deformation

B) density

C) failure

D) force

27) Choose the term that describes the rotary effect of a force.

A) shear

B) tension

C) torsion

D) torque

28) Choose the term that describes the product of force and the time over which the force acts.

A) impulse

B) inertia

C) mass

D) net force

29) Choose the term that describes the pressing or squeezing force directed axially through a body.

A) combined loading

B) compression

C) deformation

D) density

30) Choose the term that describes the load-producing twisting of a body around its long axis.

A) shear

B) tension

C) torsion

D) torque

31) Choose the term that describes the application of a single force of sufficient magnitude to cause injury.

A) acute loading

B) bending

C) repetitive loading

D) combined loading

32) Choose the term that describes the process of determining a single vector from two or more vectors by vector addition.

A) tension

B) torsion

C) torque

D) vector composition

33) One ________ is the amount of force required to accelerate 1 kg of mass at 1 m/s2.

34) EMG is the abbreviation for ________.

35) The amount of inertia possessed by a body is directly proportional to the ________ of the body.

36) The opposite of tensile force (tension) is ________ force.

37) Describe the differences between weight and mass using examples and including units of measurement.

38) Draw a free-body diagram for a tennis player executing a forehand stroke under very windy conditions. Include all forces acting on the player.

39) Compare the compressive stress affecting the cervical vertebrae and the lumbar vertebrae.

40) Explain the difference between acute and repetitive loading, including examples and injury implications.

41) Describe two different tools used to collect and analyze kinetic data and provide the strengths and weaknesses of each tool. Include both high tech and low tech examples.

42) The amount of three-dimensional space occupied by a body defines volume.

43) The metric units for mass and weight are the same.