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ligma > Linear Kinetics > Flashcards

Linear Kinetics Flashcards

Ligma

1
Q

Define Bio mechanics

A

The study of motion and the effects of forces relative to the body

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2
Q

What does biomechanics apply

A

The laws of mechanics and physics to human performance

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3
Q

Linear Kinetics Defo

A

Concerned with motion that occurs in a straight line

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4
Q

Angular kinetics defo

A

Concerned with motion that occurs around an axis

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5
Q

Define Force

A

The pushing or pulling effect one body can have on another body

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6
Q

What does force do to objects

A

Make objects stop moving/move, change their speed,direction

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7
Q

Where are forces found

A

Internal: Muscles and tendons
External: Air/water resistance, gravity, friction

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8
Q

Force-motion

A

The application of force to create motion

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9
Q

Velocity

A

The rate of the positional change of an object

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10
Q

Acceleration

A

The rate of change in velocity

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11
Q

Mass

A

The amount of matter contained within an object or body

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12
Q

Body

A

Refers to a human body, another object or a surface

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13
Q

Friction

A

The force that opposes the efforts of one body to move over another

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14
Q

4 types of friction

A

Static: Between objects that are not moving
Sliding: When two objects slide over each other
Rolling: When an object rolls over another object
Fluid: Friction caused by water/air

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15
Q

Inertia

A

The amount of resistance to change an objects state of motion

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16
Q

Newtons 1st Law

A

Inertia: A body at rest or in motion will stay at rest or in motion unless acted upon by an external force

17
Q

Newtons 2nd Law

A

Acceleration: The rate of acceleration of a body is proportional to the force applied to it, and inversely proportional to the mass of the object

18
Q

Newtons 3rd Law:

A

Action-Reaction: For every action there is an equal and opposite reaction

19
Q

eg of 1st law creating movement (golf)

A

Golf ball remains on the tee unless force is exerted on it

20
Q

Eg of 1st law changing movement (golf)

A

Once hit, the ball would travel forever if no forces were acting to stop it moving

21
Q

What forces stop a golf ball moving (1st law example)

A

Air resistance- slows it down
Gravity: Pulls it down
Friction: Stops it rolling

22
Q

Eg of 2nd law (sprinting)

A

If 2 sprinters apply the same force to a starting block the one with less mass will accelerate faster

23
Q

Eg of 3rd law (swimming)

A

Swimmer diving of the blocks pushes on the kicker and the kicker applies the exact same back to the athletes foot

24
Q

Eg of 2nd law (golf)

A

A small force applied to a ball using a putter results in slow acceleration

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