Chapter 4 – Kinematic Concepts of Human Movement

Question 1

what are the 3 types of motion

Answer 1

linear, angular and general motion

Question 2

what is linear motion

Answer 2

• Linear motion occurs when all body are moving at the same speed and same direction along a curved or straight line
• Associated with distance, displacement, speed, velocity and acceleration of the body, these characteristics are QUANTITATIVE

Question 3

what is angular motion

Answer 3

• Angular motion involves movement around a central axis

Question 4

what is general motion

Answer 4

• A combination of both linear and angular motion

Question 5

Rectilinear motion

Answer 5

• Rectilinear motion is where all the body parts move in the same direction at the same time in a straight line

Question 6

Curvilinear motion

Answer 6

• Curvilinear motion is where all the body parts move in the same direction at the same time in a curved path

Question 7

Linear distance

Answer 7

• Linear Distance measures the path travelled from start to finish, regardless of direction

Question 8

Linear displacement

Answer 8

• Linear Displacement is defined as the change of position – how far it is from the initial position to the final position.
• Measured in a straight line from the start to the end position

Question 9

Linear Speed

Answer 9

• Speed is defined as the ration of distance covered to the time taken (distance divided by time)

Speed = distance/time

Question 10

Linear Velocity

Answer 10

• Velocity is the ratio of displacement, or change in position, to time taken
• Velocity has both size and direction (eg. 30 m/s to the right
  Velocity = displacement/time

Question 11

Linear acceleration

Answer 11

• Acceleration is a measure of how quickly an object or body changes velocity
• Acceleration can be positive, negative or zero
  Acceleration = change in velocity/change in time

Question 12

Angular motion

Answer 12

• Angular motion is the rotation of an object or body around a central axis or a fixed point