Question 1

Which of the following is a type of friction?

Accepted Answer

A) Static 
B) Kinetic 
C) Both static and kinetic 
D) None of the answers are correct.

Question 2

In the context of first-class levers, the agonist and antagonist muscle groups may contract simultaneously on either side of a joint axis.

Accepted Answer

A) True 
 B)False

Question 3

Some circumstances exist where the quality of movement is improved when the body tends to be unbalanced.

Accepted Answer

A) True 
 B)False

Question 4

-Which of the following statements accurately represents the relationship between linear and angular motion?

Accepted Answer

A) Angular motion of joints produces the linear motion of walking. 
B) Linear motion of joints produces an angular motion. 
C) Angular motion of joints produces the linear motion of walking, and linear motion of joints produces an angular motion. 
D) None of the answers are correct.

Question 5

Impulse is the product of force and time.

Accepted Answer

A) True 
 B)False

Question 6

Static friction is always greater than kinetic friction and rolling friction.

Accepted Answer

A) True 
 B)False

Question 7

Overall the human leverage system is built for speed and range of movement at the expense of force generation.

Accepted Answer

A) True 
 B)False

Question 8

Levers rotate about an axis of rotation as a result of force being applied to them to cause their movement in the same direction as the resistance.

Accepted Answer

A) True 
 B)False

Question 9

Dynamics involves the study of systems in motion with acceleration.

Accepted Answer

A) True 
 B)False

Question 10

Mass is the effect of gravity on the amount of matter in a body.

Accepted Answer

A) True 
 B)False

Question 11

___________ occurs when all the applied and inertial forces acting on a moving body are in balance, resulting in movement with unchanging speed or direction.

Accepted Answer

A) Dynamic equilibrium 
B) Acceleration 
C) Treppe 
D) Static equilibrium

Question 12

Linear displacement is the distance a system moves in a straight line.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following does not describe a way in which machines function?

Accepted Answer

A) By balancing multiple forces 
B) By enhancing force in an attempt to increase total force needed to overcome a resistance 
C) By enhancing range of motion and speed of movement so that resistance can be moved farther or faster than an applied force 
D) By altering the resulting direction of an applied force

Question 14

Which of the following statements is true about kinetic friction?

Accepted Answer

A) It is the friction between two objects that are sliding along each other. 
B) It is the amount of friction between two objects that are currently stationary. 
C) It is always greater than static friction. 
D) It is much less than rolling friction.

Question 15

The _____ is the point at which all of the body's mass and weight is equally balanced or equally distributed in all directions.

Accepted Answer

A) balance point 
B) point of equilibrium 
C) axis 
D) center of gravity

Question 16

Biomechanics is the study of mechanics related to the functional and anatomical analysis of biological systems.

Accepted Answer

A) True 
 B)False

Question 17

Identify Newton's law of acceleration.

Accepted Answer

A) For every action there is an opposite and equal reaction. 
B) A body in motion tends to remain in motion at the same speed in a straight line unless acted on by a force. 
C) A change in the acceleration of a body occurs in the same direction as the force that caused it. 
D) The faster that you exercise a muscle, the less time it takes to increase its strength.

Question 18

Angular displacement is the change in location of a linearly moving body.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following levers would be best to use to move a specific object if your only objective was speed of the object's movement?

Accepted Answer

A) A first-class lever with a resistance arm of 10 and a force arm of 10 
B) A second-class lever with a resistance arm of 10 and a force arm of 20 
C) A third-class lever with a resistance arm of 20 and a force arm of 10 
D) Each lever would be just as effective as the others.

Question 20

Friction is the force that results from the resistance between the surfaces of two objects moving on each other.

Accepted Answer

A) True 
 B)False

Exam 3: Basic Biomechanical Factors and Concepts

Which of the following is a type of friction?

In the context of first-class levers, the agonist and antagonist muscle groups may contract simultaneously on either side of a joint axis.

Some circumstances exist where the quality of movement is improved when the body tends to be unbalanced.

-Which of the following statements accurately represents the relationship between linear and angular motion?

Impulse is the product of force and time.

Static friction is always greater than kinetic friction and rolling friction.

Overall the human leverage system is built for speed and range of movement at the expense of force generation.

Levers rotate about an axis of rotation as a result of force being applied to them to cause their movement in the same direction as the resistance.

Dynamics involves the study of systems in motion with acceleration.

Mass is the effect of gravity on the amount of matter in a body.

___________ occurs when all the applied and inertial forces acting on a moving body are in balance, resulting in movement with unchanging speed or direction.

Linear displacement is the distance a system moves in a straight line.

Which of the following does not describe a way in which machines function?

Which of the following statements is true about kinetic friction?

The _____ is the point at which all of the body's mass and weight is equally balanced or equally distributed in all directions.

Biomechanics is the study of mechanics related to the functional and anatomical analysis of biological systems.

Identify Newton's law of acceleration.

Angular displacement is the change in location of a linearly moving body.

Which of the following levers would be best to use to move a specific object if your only objective was speed of the object's movement?

Friction is the force that results from the resistance between the surfaces of two objects moving on each other.