Basics and Terminology Flashcards Preview

Biomechanics Exam 1 > Basics and Terminology > Flashcards

Flashcards in Basics and Terminology Deck (45):
1

The study of FORCES and their effects.

Mechanics

2

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

Kinematics

3

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

Kinetics

4

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

Biomechanics

5

What is the objective of learning biomechanics?

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

6

Scalars are ______only.

magnitude

7

Vectors are _____ and _____.

Magnitude and direction

8

Examples of scalars are?

Distance, speed, mass

9

Examples of vectors are? 6

Displacement, velocity, acceleration, weight, momentum, force

10

Vectors are represented graphically by what?

arrows

11

Distance is a ____ quantitidy.

scalar

12

Displacement is a ____ quantity.

vector

13

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

distance

14

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

displacement

15

In what circumstances are displacement and direction the same?

If moving in one direction in a straight line.

16

In what circumstance are displacement and direction different?

If the path of travel is not a straight line.

17

Speed is a ____ quantity.

scalar

18

Velocity is a ____ quantity.

vector

19

How fast and object is moving?

speed

20

Speed equation?

Distance over time.

21

The rate at which an object changes position.

velocity

22

Velocity equation?

Displacement over time.

23

The maximize velocity, must maximize what?

Amount displaced from original position.

24

The rate at which an object changes its velocity.

acceleration

25

Equation for acceleration:

change in velocity over time.

26

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

true

27

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

yes

28

Acceleration has to do with _______ ?

Changing how fast and object is moving.

29

Acceleration is a _____ quantity.

vector

30

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

1 - whether object is speeding up or slowing down.
2- Whether the object is moving in the + or - direction.

31

Mass is a ____ quantity.

scalar

32

Weight is a ____ quantity.

vector

33

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

mass

34

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

weight

35

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

10 Newton =
2.2 Pounds
= 1 kg

36

Gravitational distance changes when?

When the distance between their centers change.

37

Momentum is a ___ quantity.

vector

38

"Mass in motion" - quantity of motion an object possesses.

momentum

39

Momentum (p) =

Mass x velocity

40

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

no

41

If the object is heavier will it have less momentum?

No, it will have more!

42

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

It doubles!!

43

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

Quadruples

44

A small change in momentum variable means what?

A big change in momentum

45

How does momentum translate of chiropractic?

High velocity = greater momentum