Deck 3: Kinetic Concepts for Analyzing Human Motion

Question 1

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.

Answer 1

both compression and tension

Question 2

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

Answer 2

center of gravity

Question 3

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.

Answer 3

its length

Question 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

Question 5

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.

Question 6

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

Question 7

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

Question 8

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.

Question 9

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

A)stress
B)strain
C)shear
D)tension

Question 10

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

A)weight
B)momentum
C)mass
D)inertia

Question 11

Which of the following is a correct unit of torque?

A)N-m
B)N/s
C)Ns
D)kg m

Question 12

Which of the following is a correct unit of pressure?

A)Newton's
B)kg/cm²
C)N/cm²
D)slugs

Question 13

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.

Question 14

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.

Question 15

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.

Question 16

Inertia is directly proportional to which quantity(ies)?

A)mass
B)force
C)acceleration
D)All of these answers are correct.

Question 17

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

Question 18

Which of the following is/are scalar quantities?

A)force
B)mass
C)velocity
D)All of these answers are correct.

Question 19

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.

Question 20

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.

Question 21

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

A)deformation
B)density
C)failure
D)force

Question 22

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

A)combined loading
B)compression
C)deformation
D)density

Question 23

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

A)pressure
B)stress
C)torque
D)tension

Question 24

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

A)shear
B)tension
C)torsion
D)torque

Question 25

The metric units for mass and weight are the same.

Question 26

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

A)shear
B)tension
C)torsion
D)torque

Question 27

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

Question 28

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

Question 29

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.

Question 30

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

A)impulse
B)inertia
C)mass
D)net force

Question 31

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

Question 32

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

Question 33

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

Question 34

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

Question 35

EMG is the abbreviation for ________.

Question 36

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

Question 37

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

Question 38

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