Test One Chapter three

Question 1

what is qualitative motion analysis

Answer 1

describes how the body looks as it performs skills

Question 2

what does qualitative motion analysis included

Answer 2

position in space, position of body parts relative to each other, position of segments of body parts in relation to each other

Question 3

what are the two general approaches to qualitative analysis

Answer 3

composite and component

Question 4

what is a composite approach

Answer 4

views the whole body as a system that progresses through phases as it refines movement patterns, “Total body”

Question 5

what is component approach

Answer 5

uses the same phase method, but breaks the body down into component sections

Question 6

stages of skill progression are based on

Answer 6

the product of all body parts in combination

Question 7

what is quantitative motion analysis

Answer 7

stems from the simple need for deeper understanding of why the system moves the way that it does, based on expertise

Question 8

what is a scalar quantity

Answer 8

a quantity that possesses only a magnitude but has no particular direction

Question 9

what is mass

Answer 9

quantity of matter of which a body is composed

Question 10

what is inertia

Answer 10

resistance to having a state of motion changed by the application of force

Question 11

what is a vector quantity

Answer 11

can only be fully specified with a magnitude of appropriate units and precise direction

Question 12

what is weight

Answer 12

a measure of the force with which gravity pulls on an object’s mass

Question 13

what are some vectors representing forces

Answer 13

direction, orientation, magnitude, point of application, line of action

Question 14

what is direction

Answer 14

way the force is applied

Question 15

what is orientation

Answer 15

alignment of the vector in relation to cardinal directions

Question 16

what is magnitude

Answer 16

size of the applied force

Question 17

what is point of application

Answer 17

point at which the system receives the applied force

Question 18

what is line of action

Answer 18

imaginary line extending indefinitely along the vector through the tip and tail

Question 19

a point in space requires

Answer 19

three coordinates

Question 20

the location of a point in a plane formed by two axes requires

Answer 20

two coordinates

Question 21

if a point is on one axis then its location can be designated with

Answer 21

one coordinate

Question 22

segments are represent with

Answer 22

lines connecting points

Question 23

segments are usually

Answer 23

bony levers and the joint is the origin

Question 24

forces are represented by

Answer 24

vectors or arrows

Question 25

polar coordinate system is used when describing

Answer 25

rotation, angluar motion

Question 26

vector equality is

Answer 26

two vectors are considered equal if they possess the same magnitude and direction

Question 27

what is a resultant

Answer 27

a vector that represents the sum of all forces acting upon a system

Question 28

vector resolution

Answer 28

process used to resolve a single vector into its individual directional component vectors

Question 29

component vectors

Answer 29

the individual vectors that represent each of the multiple effects that one vector represents

Question 30

horizontal component contains

Answer 30

x=rcostheta

Question 31

vertical component contains

Answer 31

y=rsintheta

Question 32

vector composition

Answer 32

addition of two or more force vectors to find resultant

Question 33

factors that affect complexity of vector composition

Answer 33

number of vectors, relative directions and orientations of the vectors