Topic 2

Question 1

Frontal/coronal plane

Answer 1

Abduction/Adduction

Question 2

Saggital plane

Answer 2

Flexion/Extension

Question 3

Transverse plane

Answer 3

Rotation

Question 4

What is an angle?

Answer 4

the space between 2 intersecting lines or surfaces

Question 5

Absolute angle

Answer 5

Orientation with respect to a fixed line.
e.g. angle of tibia from fixed vertical/horizontal line

Question 6

Relative angle

Answer 6

Angle of one segment relative to another.
e.g. angle of the tibia relative to the thigh

Question 7

Clockwise

Answer 7

Negative

Question 8

Angular displacement

Answer 8

change in the angular position of an object from start to finish.
Measure in degrees or radians, and positive/negative.

Question 9

Anticlockwise

Answer 9

Positive

Question 10

Angular velocity

Answer 10

Rate of change in angular displacement.
= angular displacement / time

Question 11

Angular accelaration

Answer 11

Rate of change in angular velocity.
= angular velocity / time

Question 12

Tangential linear velocity

Answer 12

linear velocity of a point on a rotating segment. Tangent to the path of the object & perpendicular to the radius of the circular path.
= length of radius x angular velocity

Question 13

Tangintial linear acceleration

Answer 13

linear acceleration of a point on a rotating segment.
perpendicular to radius of circular path
= radius x angular accelaration

Question 14

Radial/centripetal linear accelaration

Answer 14

accelaration due to change in direction of velocity vector.
directed towards centre of rotation.
= velocity^2 / radius

Question 15

Linear displacement =

Answer 15

radius x angular displacement

Question 16

Linear velocity =

Answer 16

Radius x angular velocity