Quiz 1

Question 1

What is the objective in biomechanics

Answer 1

To understand the loading condition of tissues and their mechanical responses

Question 2

What is the study of forces and their effects

Answer 2

Mechanics

Question 3

What branch of mechanics deals with the geometry of the motion of objects (including displacement, acceleration, velocity)

Answer 3

Kinematics

Question 4

What is the study of relationships between the force system acting on the body and the changes it produces in body motion

Answer 4

Kinetics

Question 5

What uses the principles of mechanics for solving problems related to structure and function of biologic and physiologic systems

Answer 5

Biomechanics

Question 6

What biomechanical quantitative analysis deals with magnitude only

Answer 6

Scalars

Question 7

What does scalars measure

Answer 7

Distance, speed, mass

Question 8

What biomechanical quantitative analysis deals with magnitude and direction

Answer 8

Vectors

Question 9

What do vectors measure?

Answer 9

Displacement, velocity, accel, weight, momentum, and force

Question 10

What are vectors graphically represented by

Answer 10

Arrows

Question 11

Is distance a scalar or vector quality

Answer 11

Scalar

Question 12

Is distance a scalar or vector quality

Answer 12

Vector quality

Question 13

What deals with how much ground an object has covered during its motion

Answer 13

Distance

Question 14

What determines how far out an object is and an overall change in position

Answer 14

Displacement

Question 15

Is speed a scalar quantity or a vector quality

Answer 15

Scalar

Question 16

Is velocity a scalar quantity or a vector quality

Answer 16

Vector

Question 17

What is speed

Answer 17

How fast an object is moving

Question 18

What is velocity

Answer 18

The rate at which an object changes its position

Question 19

How do you maximize velocity

Answer 19

Must maximize the amount displaced from original position

Question 20

Is speed or velocity ignorant of direction

Answer 20

Speed

Question 21

Is speed or velocity direction aware

Answer 21

Velocity

Question 22

What is the equation for speed

Answer 22

Distance/time = rate at which an object covers distance

Question 23

What is the equation of velocity

Answer 23

Displacement/time

Question 24

Rate of displacement =

Answer 24

Rapid amplitude = short depth

Question 25

Why is velocity important with chiropractic

Answer 25

HVLA.= high velocity, low amplitude

Question 26

What is acceleration

Answer 26

The rate at which an object changes its velocity

Question 27

What is the equation for acceleration

Answer 27

Change in velocity/time

Question 28

What has to do with changing how fast an object is moving

Answer 28

Acceleration

Question 29

What type of biomechanical quantity is acceleration

Answer 29

Vector quantity

Question 30

The direction of the acceleration vector depends on what two things

Answer 30

- whether an object is speeding up or slowing down | - whether an object is moving in the + or- direction

Question 31

What type of quantity is mass

Answer 31

Scalar

Question 32

What type of quantity is weight

Answer 32

Vector quantity

Question 33

What refers to the amount of matter that is contained by the object

Answer 33

Mass

Question 34

What is the force of gravity upon that object

Answer 34

The weight

Question 35

Gravitational attraction between two bodies changes when what is changed

Answer 35

The distance between their centers (farther = less attraction)

Question 36

What quantity is momentum

Answer 36

Vector quantity

Question 37

What is momentum

Answer 37

Mass in motion, quantitiy of motion an object possesses

Question 38

What is the equation of momentum

Answer 38

Mass * velocity or p=m*v

Question 39

Double the mass = ___ the momentum

Answer 39

Double the momentum

Question 40

What is force measured in

Answer 40

Newtons (N)

Question 41

What quantitiy is force

Answer 41

Vector

Question 42

What is an action (push or pull) upon a body causing it to deform or move

Answer 42

Force

Question 43

What is the equation for mass

Answer 43

Mass*acceleration = force

Question 44

What do we have to do to increase force

Answer 44

Either increase mass or the acceleration, if you increase both then force greatly increases

Question 45

What is newtons first law of motion

Answer 45

The law of inertia

Question 46

What is resistance to having its state of motion changed by application of a force

Answer 46

Inertia

Question 47

A system in equilibrium is either at rest or what

Answer 47

Moving with constant velocity

Question 48

What is the law of inertia

Answer 48

An object at rest stays at rest and an object in motion stays in motion with the same speed and in direction unless acted upon by an unbalanced force

Question 49

What is newtons second law of motion

Answer 49

Law of force and acceleration

Question 50

What is the law of force and acceleration

Answer 50

The acceleration of an object depends directly upon the object and inversely upon the mass of the object

Question 51

What is newtons 3rd law of motion

Answer 51

Law of action and reaction

Question 52

What is the law of action and reaction

Answer 52

For every action there is an equal and opposite reaction

Question 53

Forces always come how within newtons 3rd law

Answer 53

Always in pairs - equal and opposite action-reaction force pairs

Question 54

How does newtons second law relate to the third law

Answer 54

Although every action force is met with an equal and opposite reaction force, every action does not produce an equal and opposite reaction

Question 55

What is the intesity of force perpendicular to the surface on which it acts

Answer 55

Normal stress

Question 56

What is the intensity of force parallel to the surface on which it reacts

Answer 56

Shear stress

Question 57

What is static friction

Answer 57

When 2 contacting surfaces are not sliding relative to eachother but posses the potential for movement

Question 58

What is the ratio required to initiate a sliding motion between two bodies

Answer 58

Coefficient of friction