Angular Motion

Question 1

What is angular motion?

Answer 1

Movement of a body or part of a body in a circular path around an axis of rotation

Question 2

How is angular motion generated?

Answer 2

Through the application of an eccentric force being applied to a body when force is applied outside centre of mass

Question 3

What does the longitudinal axis allow?

Answer 3

Rotational movements eg pirouette. Axis goes through top of body down

Question 4

What does the sagittal axis allow?

Answer 4

Movements such as adduction and abduction eg star jumps. Axis goes through belly button

Question 5

What does the transverse axis allow?

Answer 5

Flexion and extension movements eg walking. Axis goes through side of hips

Question 6

Which axis pairs the Frontal plane?

Answer 6

Frontal axis

Question 7

Which axis pairs the transverse plane?

Answer 7

Longitudinal axis

Question 8

Which axis pairs the sagittal plane?

Answer 8

Transverse plane

Question 9

Angular distance

Answer 9

Total length of angular path from one position to another. Measured in radians

Question 10

Angular displacement

Answer 10

Shortest straight line angular route from start to finish

Question 11

Angular speed

Answer 11

Rate of change in angular distance. Angular distance / time taken

Question 12

Angular velocity

Answer 12

Rate of rotation. Angular displacement / time taken. Measured in radians

Question 13

Moment of inertia

Answer 13

Resistance of a body to change its state of angular motion or rotation

Question 14

Angular momentum

Answer 14

Quality of angular motion possessed by a body. Inversely proportional to moment of inertia. Angular velocity x moment of inertia.