Angular Kinetics

Question 1

Kinematics

Answer 1

Area of study that examines the spatial and temporal components of motion

time/angular p, v, and a

Question 2

Kinetics

Answer 2

Study of the causes for motion

mainly forces, torque, power, energy

Question 3

It takes 50 N of force to pull a spring, what is the average force?

Answer 3

25 N

Always half of the peak force at stretched amount

Question 4

Angular motion

Answer 4

Rotation
Different regions of object travel different linear distances over the SAME time

Question 5

What changes during angular motion?

Answer 5

The orientation

Question 6

Describe how points on an axis of rotation travel during angular motion

Answer 6

They do not travel

Question 7

Describe how points further from the axis travel during angular motion

Answer 7

Travel more

Question 8

True or false:
All points move through the same angle during angular motion

Answer 8

True

Question 9

Pure rotation

Answer 9

No linear motion of the axis of rotation

Question 10

General motion

Answer 10

Rotation and translation occur at the same time

Question 11

Degrees are considered what type of unit?

Answer 11

Supplemental unit

Question 12

True or false:
Degrees are considered a base unit

Answer 12

False
not required

Question 13

Angular position, velocity, and acceleration are classified as ______?

Answer 13

Vectors

Question 14

Angular position is about which axis?

Answer 14

z

Question 15

Since angular position is always about the x axis, what do we need not need to include?

Answer 15

Direction (+)/(-) just keep positive

Question 16

How do you find angular displacement

Answer 16

(Angular position final)-(angular position initial)

Does not care about the distance traveled, just start to end

Question 17

True or false:
Regardless of the angular direction, you should always add positive values for angular distance.

Answer 17

True

Question 18

Does positive angular velocity constitute a positive angular acceleration?

Answer 18

No

Question 19

Positive angular acceleration conditions

Answer 19

1. Speeding up during positive rotation
2. Slowing down during negative rotation

Question 20

Positive rotation direction

Answer 20

CCW

Question 21

Negative rotation direction

Answer 21

CW

Question 22

Negative angular acceleration conditions

Answer 22

1. Speeding up during negative rotation
2. Slowing down during positive rotation

Question 23

Positive velocity

Answer 23

CCW direction

Question 24

Negative velocity

Answer 24

CW direction

Question 25

What type of quantity is angular speed?

Answer 25

Scalar

Question 26

Angular speed

Answer 26

How fast an object is rotating independently of direction

Question 27

Angular speed is always _____

Answer 27

Positive

Question 28

Instantaneous vs average angular speed

Answer 28

Instantaneous- amount of instantaneous angular velocity Average- amount of average angular velocity

Question 29

Describe how to find segment angles

Answer 29

1. Distal end of segment 2. Draw horizontal line from point in positive (x) direction 3. Draw an angle back to connect x-axis and orientation axis drawn from distal point

Question 30

How does the angle of the person holding a barbell when doing a bicep curl change during the UP phase?

Answer 30

Increases

Question 31

How does the angle of the person holding a barbell when doing a bicep curl change during the DOWN phase?

Answer 31

Decreases

Question 32

How will the angular profile change if you alter the forearm length?

Answer 32

No changes in angular or time profiles

Question 33

How will the angular profile change if you alter the time it takes to complete a repitition?

Answer 33

Non-linear change due to delta t altering in the denominator

Question 34

How will the angular profile change if you alter the mass of the barbell?

Answer 34

No changes in angular or time profiles

Question 35

Included Angle

Answer 35

Increases as the joint opens up Decreases as the joint closes up (Default)

Question 36

Excluded Angle

Answer 36

Increases as the joint closes up Decreases as the joint opens up

Question 37

Which type of angle is associated with elbow extension?

Answer 37

Included *Gets more open*

Question 38

Which type of angle is associated with elbow flexion?

Answer 38

Excluded *Gets more closed*

Question 39

How would changing the ROM affect the angular profile?

Answer 39

Linear change due to changing the numerator

Question 40

Radians

Answer 40

Unitless quantity Arc length/radius

Question 41

According to the Mimmi angle segment diagram, which body segment angles aligned with our understanding? -Knee -Ankle -Hip

Answer 41

Knee angle

Question 42

Is there such thing as a centrifugal force?

Answer 42

No