test 2

Question 1

units for angular kinematics

Answer 1

degrees or radiant

Question 2

formula for angular kinematics( velocity)

Answer 2

0 final- 0initial / change in time the 0 is pheta
measured in - deg/s or rad/s

Question 3

what is complex kinematics

Answer 3

linear and angular combined, multi segment kinematics

Question 4

linear and angular combined is defined as what

Answer 4

at the end of a rotating end there is a linear component

Question 5

tangential velocity

Answer 5

tangent to the curve but kicks out anytime

Question 6

what is the strange w stand for

Answer 6

angular velocity

Question 7

what is a force by definition

Answer 7

a push or a pull

Question 8

what are the four behavioral properties of a force

Answer 8

magnitude, direction, point of application, line of action

Question 9

line of action

Answer 9

a line that goes infinitely through the course of action

Question 10

external forces are considered

Answer 10

external forces are considered gravity(9.81m/s2), fluid resistance(aerodynamics), friction, contact with another surface or object

Question 11

internal forces are considered

Answer 11

muscle and joint force, friction

Question 12

work is what mathematically

Answer 12

force times distance or newton times meters

Question 13

force is what unit

Answer 13

newtons

Question 14

distance is what unit

Answer 14

meters

Question 15

external work examples

Answer 15

95 lbs is how many newtons
95 divided by 2.21 to get kg and then multiply by 9.81 m/s2
or 1 lbs is 4.448 n can do 95lb times 4.448 n

you would take the newton found and multiply by the meters found or distance

Question 16

power is calculated as

Answer 16

work divided by time

Question 17

what is more important force or distance

Answer 17

the rate at which you can do work is athletically far more important the amount of work you can do

Question 18

Velocity is calculated as (m/s)

Answer 18

Distance by time

Question 19

Momentum is calculated as (kg.m/s)

Answer 19

Kg times m/s

Question 20

Ke or energy is calculated as (j)

Answer 20

1(/2) mass velocity squared

Question 21

Types of forces

Answer 21

compressive, tensile, torsional, shearing

Question 22

compressive force is what

Answer 22

makes objects shorter and wider

Question 23

tensile force is what

Answer 23

distraction, traction force

Question 24

torsional force is what

Answer 24

rotational force

Question 25

shearing force is what

Answer 25

a combination of sharing and torsional force

Question 26

what is a kinetic chain

Answer 26

forces that are transmitted through limbs that are connected

Question 27

classes of levers

Answer 27

1st class 2nd class 3rd class

Question 28

2nd class

Answer 28

same side of the axis of rotation and the applied force is further away then the resistance force change------fr-------fa

Question 29

1st class

Answer 29

applied force and resistant forces are on opposite sides of the axis fr--------change--------fa

Question 30

movement arm, lever arm, torque arm are what

Answer 30

arm means length, "perpendicular distance from the axis of rotation to the point of application of the force in question"

Question 31

what is better a longer or shorter movement arm

Answer 31

longer

Question 32

3rd class lever is what

Answer 32

applied forces and resistance forces are on the same side of the axis but the resistance force has a longer movement arm

Question 33

what do the majority of the muscles in the body operate at

Answer 33

a mechanical disadvantage for force but good for speed and agility

Question 34

know the classes of levers and the examples of each

Answer 34

no second class lever**

Question 35

mechanical advantage/disadvantage equation

Answer 35

mechanical advantage= effort arm/resistance arm

Question 35

torque or moment equation

Answer 35

force times distance(mechanical distance) or newton times meters

Question 36

what is assumed for moment/torque

Answer 36

proximal moment or torque is in the positive direction

Question 37

elbow flexor moment

Answer 37

positive moment at the elbow is a elbow flexor moment

Question 38

adj is what angle

Answer 38

top one

Question 39

hyp is what angle

Answer 39

bottom one

Question 40

opp is what angle

Answer 40

to the right

Question 41

how do moment and resistance forces move

Answer 41

moment arm for the resistance forces and effort force change instantaneously depending on joint angle

Question 42

work energy theorem is what

Answer 42

work = change in energy

Question 43

types of energy

Answer 43

kinetic, potential, thermal

Question 44

kinetic energy is what

Answer 44

some type of energy associated as motion( tke- translational kinetic energy, rke- rotational kinetic energy)

Question 45

rke is calculated as

Answer 45

1/2intertia*omega2

Question 46

tke is calculated as

Answer 46

1/2mv2

Question 47

something that has alot of inertia has what

Answer 47

resists change

Question 48

potential energy is what

Answer 48

potential for an object to do work based on its location in space

Question 49

potential energy is what calculated

Answer 49

mass*gravity*high above the ground

Question 50

stored elastic energy is what

Answer 50

energy associated with something elastic (rubberband)

Question 51

if the force of the resistance is greater then the force of the muscles what kind of energy do you get

Answer 51

ecentric

Question 52

if the force of the resistance is less then the force of the muscles what kind of contraction do you get

Answer 52

concentric

Question 53

if the force of the resistance is greater then the force of the muscles what kind of contraction do you get

Answer 53

eccentric

Question 54

if the force of the resistance and the force of the muscles are equal what kind of contraction do you get

Answer 54

isometric