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Biomechanics Exam 1 > Basics and Terminology > Flashcards

Basics and Terminology Flashcards

1
Q

The study of FORCES and their effects.

A

Mechanics

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2
Q

Branches of mechanics that deals with the geometry of the MOTION OF OBJECTS (inc. Displacement, acceleration, velocity).

A

Kinematics

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3
Q

The study of RELATIONSHIPS between the FORCE system acting on the body and the changes it produces in BODY MOTION.

A

Kinetics

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4
Q

Uses principles of mechanics for SOLVING PROBLEMS related to structure and function of biologic and physiologic systems.

A

Biomechanics

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5
Q

What is the objective of learning biomechanics?

A

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

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6
Q

Scalars are ______only.

A

magnitude

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7
Q

Vectors are _____ and _____.

A

Magnitude and direction

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8
Q

Examples of scalars are?

A

Distance, speed, mass

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9
Q

Examples of vectors are? 6

A

Displacement, velocity, acceleration, weight, momentum, force

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10
Q

Vectors are represented graphically by what?

A

arrows

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11
Q

Distance is a ____ quantitidy.

A

scalar

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12
Q

Displacement is a ____ quantity.

A

vector

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13
Q

How much a ground object has covered during it’s motion.

A

distance

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14
Q

How far out of place and object is, overall change in position.

A

displacement

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15
Q

In what circumstances are displacement and direction the same?

A

If moving in one direction in a straight line.

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16
Q

In what circumstance are displacement and direction different?

A

If the path of travel is not a straight line.

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17
Q

Speed is a ____ quantity.

A

scalar

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18
Q

Velocity is a ____ quantity.

A

vector

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19
Q

How fast and object is moving?

A

speed

20
Q

Speed equation?

A

Distance over time.

21
Q

The rate at which an object changes position.

A

velocity

22
Q

Velocity equation?

A

Displacement over time.

23
Q

The maximize velocity, must maximize what?

A

Amount displaced from original position.

24
Q

The rate at which an object changes its velocity.

A

acceleration

25
Q

Equation for acceleration:

A

change in velocity over time.

26
Q

T/F If an object is not changing it’s velocity, then the object is not accelerating?

A

true

27
Q

Can a person be moving very face and still not be changing velocity?

A

yes

28
Q

Acceleration has to do with _______ ?

A

Changing how fast and object is moving.

29
Q

Acceleration is a _____ quantity.

A

vector

30
Q

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

A

1 - whether object is speeding up or slowing down.

2- Whether the object is moving in the + or - direction.

31
Q

Mass is a ____ quantity.

A

scalar

32
Q

Weight is a ____ quantity.

A

vector

33
Q

Determined by the amount of matter that is contained by the object. (How much stuff is in the object)

A

mass

34
Q

The force of gravity acting on an object. (the force with which gravity pulls upon that stuff).

A

weight

35
Q

A 1kg mass is how many newtons? How many pounds?

A

10 Newton =
2.2 Pounds
= 1 kg

36
Q

Gravitational distance changes when?

A

When the distance between their centers change.

37
Q

Momentum is a ___ quantity.

A

vector

38
Q

“Mass in motion” - quantity of motion an object possesses.

A

momentum

39
Q

Momentum (p) =

A

Mass x velocity

40
Q

Will something that has a lot of momentum be easier to stop?

A

no

41
Q

If the object is heavier will it have less momentum?

A

No, it will have more!

42
Q

If you double the mass, what happens to the momentum?

A

It doubles!!

43
Q

If you quadruple the velocity, what happens to the momentum?

A

Quadruples

44
Q

A small change in momentum variable means what?

A

A big change in momentum

45
Q

How does momentum translate of chiropractic?

A

High velocity = greater momentum

Biomechanics Exam 1 (7 decks)

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