Topic 4.3: Fundamentals of Biomechanics

Question 1

Speed

Answer 1

How fast an object is moving

Question 2

Force

Answer 2

The mechanical interaction that goes on between 2 objects (push or pull)

Question 3

Velocity

Answer 3

Speed in a given direction

Question 4

Displacement

Answer 4

Difference between an objects starting position and final position

Question 5

Acceleration

Answer 5

Rate of change in velocity

Question 6

Impulse

Answer 6

Length of time a force is applied

Question 7

Biomechanics

Answer 7

The study of human movement including the interaction between the participant and equipment.

Question 8

Centre of Mass

Answer 8

The mathematical point around which the mass of an object is evenly distributed

Question 9

Centre of Gravity

Answer 9

AKA Centre of Mass for bodies or objects where the force of gravity does not vary

Question 10

Force-Time Graph

Answer 10

Represents impulse

Question 11

Velocity-Time Graph

Answer 11

Displays the motion of an object

Question 12

Fulcrum

Question 13

Effort

Question 14

First-Class Levers

Answer 14

Fulcrum is the middle component

Question 15

Second-Class Lever

Answer 15

Load is the middle component

Question 16

Third-Class Lever

Answer 16

Effort is the middle component

Question 17

Fulcrum

Answer 17

The Joint (axis)

Question 18

Load

Answer 18

Weight of the body/additional resistance

Question 19

Effort

Answer 19

Direction of muscle force

Question 20

Newton’s 1st Law of Motion

Answer 20

Bodies or objects stay where they are or keep moving unless acted on by an unbalanced force (law of inertia)

Question 21

Newton’s 2nd Law of Motion

Answer 21

Force is equal to mass multiplied by acceleration (Law of Acceleration)

Question 22

Newton’s 3rd Law of Motion

Answer 22

For every action there is an equal and opposite reaction (Law of Reaction)