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Physical Education > U3 AOS1b: Biomechanics > Flashcards

U3 AOS1b: Biomechanics Flashcards

1
Q

Force Formula

A

Force = mass x acceleration

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2
Q

Speed

A

Movement from one point to another in the fastest possible time

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3
Q

Velocity

A

Speed in a given direction

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4
Q

Angular Displacement

A

Represents the difference in the angle between the start and end position of the body

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5
Q

Moment of Inertia

A

Refers to the resistance of a rotating object to change its state of motion

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6
Q

Simultaneous Force Summation

A

Where all body parts move at the same time to produce a force. Generally used to produce accuracy, however, some activities do require this method to attain maximum power

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7
Q

Centre of Gravity

A

The theoretical point in an object at which its entire mass appears to be concentrated; is also known as the centre of mass and can be located outside your body

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8
Q

Balance

A

The ability to neutralise forces that disturb equilibrium

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9
Q

Momentum

A

Momentum is a measure of the motion possessed by a moving body. The product of mass and velocity

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10
Q

Height of Release

A

The greater the height of release of a projectile, the greater the horizontal distance it will cover, provide all factors are equal

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11
Q

Impulse

A

Is a measure of what is required to change the motion of an object and is the product of force applied and the time over which the force is applied

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12
Q

Impulse Formula

A

Impulse = force x time

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13
Q

General Motion

A

Combination of linear and angular motion, human movement usually consists of general motion rather than pure linear motion or angular motion

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14
Q

Angle of Release

A

The angle of release of a projectile determines trajectory shape, will all other things help constantly it also determines. The time the object stays in the air, and the horizontal distance the objects moves

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15
Q

Angular Velocity

A

Refers to the velocity or speed of a rotating object

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16
Q

Newtons 2nd Law

A

The acceleration of a body is proportional to the force applied to it and inversely proportional to the mass of the object (law of acceleration)

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17
Q

Newtons 2nd Law Formula

A

Force = mass x acceleration

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18
Q

Conservation of Momentum (Linear)

A

The principle states the total momentum of 2 objects and after impact are equal

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19
Q

Conservation of Momentum (Angular)

A

A spinning body will continue spinning indefinitely unless an external force acts on it

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20
Q

Acceleration

A

rate at which the velocity of a body changes with respect to time

21
Q

Speed of release

A

The speed of a projectile at the instant of release

22
Q

Linear Distance

A

Path of a body as it moves from 1 location to another, measured in terms of total distance covered

23
Q

Angular Distance

A

Represent the sum of all angles as a body moves from its start position to its end position

24
Q

1st Class Lever

A

(FAR or RAF)
In first-class levers axis is located in the middle with force and resistance either side (see-saw)

25
Q

Mass

A

The weight of something or object

26
Q

Angular Motion

A

Takes place when object turns about an axis of rotation (measured in degrees)

27
Q

Internal Force

A

Action of muscles and tendons on the skeletal system

28
Q

External Forces

A

Gravity, friction, air resistance and water resistance

29
Q

Base of Support

A

Area bound by the outer most regions of contact between a body and support surface

30
Q

Motion

A

Refers to a body’s change in position in relation to time. Motion is typically described as linear or angular but can be a combination of both

31
Q

Projectile Motion

A

The type of motion experienced by projectiles travelling through the air (air resistance and gravity)

32
Q

Newtons 3rd Law

A

For every action, there is an equal and opposite reaction

33
Q

Newtons 1st Law

A

Every object will remain at rest or in uniform. motion in a straight line unless compelled to change its state by the action of an eternal force (law of inertia)

34
Q

Parts to a Lever

A
  1. Resistance (or weight/load to be moved)
  2. Axis (or pivot point/fulcrum around which the lever rotates)
  3. Force (application of force/effort e.g muscular force to move the resistance)
35
Q

Sequential Force Summation

A

Where body parts are moved in sequence to produce a force. Generally used to produce maximum force in whole body actions such as throwing, kicking and striking

36
Q

Linear Displacement

A

Measure how far you finish from your position in a set direction, measured in magnitude and direction

37
Q

Angular Momentum Formula

A

Angular momentum = angular velocity x moment of inertia

38
Q

Angular Momentum

A

Momentum is a measure of the motion possessed by a moving body. The product of mass and velocity (angular sense)

39
Q

Linear Motion

A

Takes place through a linear pathway either in a curved line (curvilinear) or a straight line (straight line motion). Also referred to as translator motion or translation

40
Q

Inertia

A

The amount of resistance to a change in an objects state of motion

41
Q

D.E.E.P

A

Define the concept
Equation (if so)
Explain the concept
Performance

42
Q

Momentum Formula

A

Momentum = mass x velocity

43
Q

Stability

A

Objects resistance to movement, from a balanced position (static or dynamic)

44
Q

Line of Gravity

A

An imaginary vertical line passing downwards through the COG

45
Q

2nd Class Lever

A

(ARF OR FRA)
In 2nd class levers, the axis is located at the end with the resistance and force applied at the opposite end (wheelbarrow)

46
Q

3rd Class Lever

A

(AFR or RFA)
In 3rd class levers, the axis is located at 1 end with the application of the force in the middle and resistance applied at the opposite end (bicep curl)

47
Q

Friction

A

Friction is a force that arises when one object or body moves across another - friction always opposes motion Frictional forces play a large part in changing the state of motion of an object or body (static, rolling, sliding, fluid)

48
Q

Equilibrium

A

When opposing forces are balanced

Physical Education (2 decks)

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