Physical Education Flashcards

1
Q

What is biomechanics?

A

The study of: the function and motion of how the body moves and functions

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2
Q

Why do athletes need to know biomechanics?

A

If they know how their body works they can optimise their performance and see what needs improving with their technique

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3
Q

What is flexion?

A

Bring out (joint angle decreasing)

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4
Q

What is extension?

A

Bring in (joint angle increasing)

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5
Q

What is dorsflexion?

A

Foot going upwards

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6
Q

What is plantarflexion?

A

Foot going down

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7
Q

What is functional anatomy?

A

How the anatomy of the body functions

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8
Q

What is inversion?

A

When you roll your ankle

Outside of foot

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9
Q

What is eccentric?

A

Movement outwards (down)

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10
Q

What is eversion?

A

Roll your ankle inside your foot

Inside of foot

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11
Q

What is isometric?

A

Muscles flexed but no movement

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12
Q

What is some examples of internal forces?

A

The heart beating

The lungs pumping

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13
Q

What is external force?

A

Forced added from outside the body

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14
Q

What is an example of external force?

A

Air resistance, friction

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15
Q

What is abduction?

A

Moving away from the midpoint of the body

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16
Q

What is adduction?

A

Moving towards the midpoint of the body

17
Q

What is concentric?

A

Contracting muscles (going in)

18
Q

What is the first law of motion?

A

The law of inertia

It stays still unless force is added externally

19
Q

What is the second law of motion?

A

The law of acceleration

Acceleration = mass and force

20
Q

What is the third law of motion?

A

The law of reaction

For every action there is a equal and opposite reaction

21
Q

What is drag force?

A

A force generated by air or water in the opposite direction

22
Q

Define speed

A

How fast something is moving

23
Q

What is velocity?

A

How fast something covers a distance in a certain direction

DIRECTION

24
Q

Explain acceleration

A

How quick the velocity changes over time

25
Tell me about displacement
How much something moves from the original postition
26
What do you think distance is all about?
The length between two spaces
27
How do you find the momentum?
The velocity and mass of the object
28
What happens if you tilt your hand upwards while going forwards
The pressure builds up underneath and forces the object upwards
29
What is Bernoulli's principle?
There is pressure on either side of the object and the pressure decreases with speed
30
What must every lever have?
A force, load and fulcrum
31
What type of lever is moving to the tips of your toes?
Second class Fulcrum, load then effort
32
What lever is used when you bring your arm up?
Third class lever Fulcrum, force then load
33
What is the first class lever?
Load, fulcrum then effort
34
What is a second class lever?
Fulcrum, load then effort
35
What is a third class lever?
Fulcrum, effort then load
36
Why do we need functional anatomy?
To get our technique better. If we understand what we are doing wrong them we can improve it
37
What is summation of force?
When all of the body parts work in time together to create optimal performance