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Kin 158 > Lecture 4 > Flashcards

Lecture 4 Flashcards

1
Q

What are tje 4 steps of movement analysis

A

Description

Observation

Evaluation

Instruction

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2
Q

What comes under description

A

Goal of movement

Use of biomechanical terms

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3
Q

What are the phases pf typical activity (Description)

A

Preparation

Execution

Follow through

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4
Q

What comes under Observation

A

Best viewing angle (sagittal, frontal or transverse)

Number of viewing angles

Distance

Number of repetitions

Equipment

Clothing and background

Location

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5
Q

What comes under Evaluation

A

Identifying errors

Evaluate errors

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6
Q

When you evaluate errors what do you look for

A

Cause

Impact

Safety

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7
Q

What comes under instruction

A

Clear communication

Learning time

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8
Q

What is Kinematics

What does it include

A

Study of the motion without considering what is causing the motion

Includes both spatial and temporal characteristics

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9
Q

What are the two preliminary conditions (questions)

A

What is moving

What is it moving in relation to

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10
Q

What comes under “What is moving”

A

Body - the object of analysis

System - the object of analysis that is made up of two or more bodies

Point - a way of representing a body that has no dimensions

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11
Q

Body refers to

A

The object of analysis

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12
Q

System refers to

A

The object of analysis that is made up of two or more bodies

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13
Q

Point refers to

A

A way of representing a body that has no dimensions

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14
Q

What comes under “What is it moving in relation to”

A

Frame of reference

Origin

Direction

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15
Q

Frame of reference refers to

A

The perspective from which movement is described

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16
Q

Direction refers to it being

A

Positive or negative

17
Q

How do you establish a frame of reference

A

Locate an origin (fixed and memorable)

Define axis

Specify a positive and negative direction

18
Q

Position represents

A

An objects location in the frame of reference

The objects physical location in space

19
Q

What are the two quantities that we need to define

A

Scalar

Vector

20
Q

What is Scalar

A

Magnitude only

Speed, volume, mass, time etc

21
Q

What is Vector

A

Magnitude and a spatial direction

Velocity, force, displacement etc

22
Q

What is displacement

A

Straight line from two points

This is the shortest line

Also is a vector quantity

A—————————-D

23
Q

What is distance

A

Actual path of line

A -> B
B -> C
C -> D

        B                  D A                    C

Alsi is a scalar quantity

24
Q

What is the rate of change

What is the equation for it

What quantity

A

How quickly a value is increasing or decreasing with time

Change in quantity
________________
Change in time

Can be described as scalar or vector
Speed or velocity

25
Q

What is speed

What is the equation

What is it measured as

What are the typical units of speed

A

How fast a body is moving with no regard to direction

Distance
__________
Change in time

Measured as the rate of change of DISTANCE

m/s
mile/hr

26
Q

What is velocity

What is the equation

What is it measured as

What are the typical units of velocity

A

How fast a body is moving in a particular direction

Change in position
___________________
Change in time

Measured as the time rate of change in POSITION

m/s
ft/s

27
Q

If we run 1 mile and we finish back from where we started, what will be the displacement

What will be the distance

A

0m

1600m

28
Q

What is acceleration

What is the equation

What is it measured as

What quantity

What are the typical units of

A

Change in VELOCITY over time

Change in velocity
_______________
Change in time

Measure of how something is speeding up or slowing down

Vector quantity

m/s m
_____ or _______
s s^2

Kin 158 (24 decks)

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