Describing Motion

Question 0

Biomechanics

Answer 0

The application of the laws of mechanics to animate motion.

Question 1

Speed

Answer 1

Scalar quantity, how fast an object is moving

Average Speed= distance travelled / time of travel

Question 2

Kinesiology

Answer 2

Scientific study of human movement can describe any form of anatomical, physiological, psychological, or mechanical human movement evaluation. 
Describes the content of a class in which human movement is evaluated by examination of its source and characteristics.

Question 3

Functional anatomy

Answer 3

Is the study of the body components needed to achieve or perform a human movement or function

Question 4

Kinematics

Answer 4

Science of describing motion, includes linear and angular motion.
Movement or motion is a change in place, position, or posture occurring over time and relative to some point in the environment.

Question 5

Linear motion

Answer 5

Movement along a straight or curved pathway in which all points on a body or an object move the same distance in the same amount of time.

Question 6

Angular motion

Answer 6

Is motion around some point so that different regions of the same body segment or object do not move through the same distance in a given amount of time.

Question 7

Kinetics

Answer 7

Examines the forces acting on a system, such as the human body, or any object. A kinetic movement analysis examines the forces causing a movement.

Question 8

Statics

Answer 8

Is a branch of mechanics that examines systems that are not moving or are moving at a constant speed = equilibrium

Question 9

Dynamics

Answer 9

Is the branch of mechanics used to evaluate this type of movement because it examines systems that are being accelerated. Dynamics uses a kinematic or kinetic approach or both to analyze movement.

Question 10

Basic movements

Answer 10

Flexion
Extension
Hyperflexion
Hyperextension
Medial rotation
Lateral rotation

Question 11

Distance

Answer 11

Scalar quantity that refers to how much ground an object has covered during its motion.

Question 12

Displacement

Answer 12

Vector quantity that refers to how far out of place an object is, overall change in position.

Question 13

Velocity

Answer 13

Vector quantity, rate at which an object changes its position. Direction aware. Velocity is speed with direction.
Average velocity= change in position / time
= displacement / time

Question 14

Acceleration

Answer 14

Vector quantity, rate at which an object changes its velocity.
Average acceleration = change in velocity / time
= Vf - Vi / T
Units = m/s/s, mi/hr/s, km/hr/s, m/s^2

Question 15

Constant acceleration

Answer 15

Velocity changing by a constant amount each second.

Question 16

Positive acceleration

Answer 16

Object is speeding up and the acceleration is in the same direction as the velocity.

Question 17

Negative acceleration

Answer 17

Object moving in positive direction and is slowing down

Question 18

Gravity

Answer 18

g = change in velocity / time

= -9.8m/s / 1s