chapter 6

Question 1

what is linear (translatory) movement

Answer 1

• moves w/ uniform distance, speed, and direction

- kinematics of motion represented by motion of center of mass

Question 2

what are the two sub divisions of linear motion

Answer 2

• rectilinear: moves in straight line

- curvilinear: moves in curved or circular path

Question 3

what is angular (rotary) movement

Answer 3

• system acts as a radius rotating around an axis point

- descriptive of entire radius

Question 4

what is general movement

Answer 4

-both linear and angular motion

Question 5

how is the movement of human body general movement

Answer 5

• body as a whole experiences linear motion described by motion of CM
• segments of body experience angular motion as they rotate around jnt to cause motion

Question 6

factors determins kind of motion

3 of them

Answer 6

• line of force application relative to CM
• env’t pathways of movement available to object
• factors that modify motion

Question 7

is the object freely moving

• linear?
• angular?
• general?

Answer 7

• linear: yes
• angular: no
• general: yes

Question 8

does line of applied force pass thu CM

• linear?
• angular?
• general?

Answer 8

• linear? yes
• angular? yes or no
• general? no

Question 9

external factors modifying motion

3 of them

Answer 9

• gravity
• friction
• fluid forces

Question 10

internal forces modifying motion

4 of them

Answer 10

• friction in jnts
• tension of antagonits, ligs, soft tissues
• anomalies of bone and jnt structure
• pressure within jnt capsules