Biomechanics

Question 1

What is linear motion and give an example

Answer 1

Body moving in a straight or curved line
E.g
Throwing a chest pass in netball as body moves in straight line to the reicever

Question 2

What is angular motion and give an example

Answer 2

Body moving around an axis of motion
E.g
Upper arm when bowling a ball on cricket

Question 3

What is general motion and give an example

Answer 3

Combination of linear and angular motion
Eg.
Cyclist - knees rotate but the body moves in a straight line

Question 4

What is an internal force and give an example

Answer 4

Force generated by action of muscles
E.g
The contraction of the quadriceps to extend leg when kicking a football

Question 5

What is an external force and give an example

Answer 5

Force applied outside the body
E.g
Gravity keeping body on the ground

Question 6

What is applied forces?

Answer 6

action of muscles to surface and objects

Question 7

What is an isometric force?

Answer 7

Length of a muscle that doesn’t change

E.g gripping a racket

Question 8

What is an isotonic force and give an example

Answer 8

Maximal - all out effort
Eg.
Throwing a javelin

Submaximal
Graduated muscle contraction to achieve contracted movement
Eg.
Set shot in volleyball

Question 9

What is a reaction force and give an example

Answer 9

Any force is applied a similar force opposes it from outside the body
Eg.
Running along a track

Question 10

What is reabsorption of force and give an example

Answer 10

Forces exerted by the body are absorbed through the joints
Eg.
Trampolining

Question 11

What is the preparation phase of shooting a basketball?

Answer 11

Foot on same side as shooting hand, hand is placed slightly forward of the other foot and pointing towards basket

Question 12

What is the action of a basketball shot

Answer 12

Preferred hand lifts the ball up past the face and into position from which the shot is made

Question 13

What is the follow through of a basketball shot

Answer 13

Fingers in direction of basket