Flashcards in Quiz 1 Deck (58):

1

## What is the objective in biomechanics

### To understand the loading condition of tissues and their mechanical responses

2

## What is the study of forces and their effects

### Mechanics

3

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

### Kinematics

4

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

### Kinetics

5

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

### Biomechanics

6

## What biomechanical quantitative analysis deals with magnitude only

### Scalars

7

## What does scalars measure

### Distance, speed, mass

8

## What biomechanical quantitative analysis deals with magnitude and direction

### Vectors

9

## What do vectors measure?

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

10

## What are vectors graphically represented by

### Arrows

11

## Is distance a scalar or vector quality

### Scalar

12

## Is distance a scalar or vector quality

### Vector quality

13

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

### Distance

14

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

### Displacement

15

## Is speed a scalar quantity or a vector quality

### Scalar

16

## Is velocity a scalar quantity or a vector quality

### Vector

17

## What is speed

### How fast an object is moving

18

## What is velocity

### The rate at which an object changes its position

19

## How do you maximize velocity

### Must maximize the amount displaced from original position

20

## Is speed or velocity ignorant of direction

### Speed

21

## Is speed or velocity direction aware

### Velocity

22

## What is the equation for speed

### Distance/time = rate at which an object covers distance

23

## What is the equation of velocity

### Displacement/time

24

## Rate of displacement =

### Rapid amplitude = short depth

25

## Why is velocity important with chiropractic

### HVLA.= high velocity, low amplitude

26

## What is acceleration

### The rate at which an object changes its velocity

27

## What is the equation for acceleration

### Change in velocity/time

28

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

### Acceleration

29

## What type of biomechanical quantity is acceleration

### Vector quantity

30

## The direction of the acceleration vector depends on what two things

###
-whether an object is speeding up or slowing down

- whether an object is moving in the + or- direction

31

## What type of quantity is mass

### Scalar

32

## What type of quantity is weight

### Vector quantity

33

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

### Mass

34

## What is the force of gravity upon that object

### The weight

35

## Gravitational attraction between two bodies changes when what is changed

### The distance between their centers (farther = less attraction)

36

## What quantity is momentum

### Vector quantity

37

## What is momentum

### Mass in motion, quantitiy of motion an object possesses

38

## What is the equation of momentum

### Mass * velocity or p=m*v

39

## Double the mass = ___ the momentum

### Double the momentum

40

## What is force measured in

### Newtons (N)

41

## What quantitiy is force

### Vector

42

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

### Force

43

## What is the equation for mass

### Mass*acceleration = force

44

## What do we have to do to increase force

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

45

## What is newtons first law of motion

### The law of inertia

46

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

### Inertia

47

## A system in equilibrium is either at rest or what

### Moving with constant velocity

48

## What is the law of inertia

### 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

49

## What is newtons second law of motion

### Law of force and acceleration

50

## What is the law of force and acceleration

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

51

## What is newtons 3rd law of motion

### Law of action and reaction

52

## What is the law of action and reaction

### For every action there is an equal and opposite reaction

53

## Forces always come how within newtons 3rd law

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

54

## How does newtons second law relate to the third law

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

55

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

### Normal stress

56

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

### Shear stress

57

## What is static friction

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

58