Test 1 Flashcards

(55 cards)

1
Q

biomechanics is the breakdown of what

A

biology - mechanics is statics and dynamics

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2
Q

statics of mechanics can be broken down into what

A

linear and angular

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3
Q

dynamics of mechanics can be broken down into

A

linear and angular

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4
Q

linear is what

A

all particles of a system move in the same direction in a straight line and cover the same distance in the same length of time at the same velocity.

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5
Q

angular is what

A

all particles of a system move around an angle and travel different distances in the same length of time

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6
Q

motor behavior is what

A

motor development, motor learning, motor control

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7
Q

mass standard unit

A

quantity of matter in an object (m) kg

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8
Q

weight standard unit

A

mass times gravity

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9
Q

gravity is what constant

A

9.81 m/s2

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10
Q

what is the unit for weight

A

newton

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11
Q

length standard unit

A

km or meters or cm

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12
Q

how to get to mass from weight

A

150lbs is 68kg then divide by 9.8 then it is 665.83n

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13
Q

direct conversation to lbs to newton

A

multiply lbs by 4.448

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14
Q

kinematics is what

A

study of motion

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15
Q

kinetics is what

A

study of forces

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16
Q

kinematics is broken down into what three things

A

position to velocity to acceleration

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17
Q

position(motion in space) is defined at what letters(symbol)

A

x,y

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18
Q

what’s the unit for position

A

meters

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19
Q

whatis the symbol for velocity

A

v

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20
Q

how to calculate velocity

A

position final - position initial / change in time

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21
Q

what is the units for change in velocity

A

m/s

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22
Q

acceleration symbol is what

A

little a

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23
Q

definition of acceleration

A

change in velocity over time

24
Q

definition of velocity

A

change in position with time

25
formula for acceleration
velocity final - velocity initial / change in time
26
unit is what for acceleration
m/s2
27
what is the most common form of motion
general motion (has linear and angular motion)
28
absolute motion
one fixed frame of reference (ground)
29
relative motion
one fixed frame of reference and one moving frame of reference
30
anthropometrics
size shape and metrics of a human body limb
31
volume unit
meter/3
32
density unit
mass/volume
33
center of mass
single point on an object were we consider the effects of gravity to act
34
where is the highest velocity on an object
the distal end cuz it travels the most
35
vector vs scalar info
vector has direction and magnitude and a scalar quantity has magnitude only
36
displacement
straight line distance between final and initial distance
37
average vs instantaneous
average is were ur starting and ending, instantaneous is to see time frames that are close together (short)
38
is average or instantaneous the best measure for kinematics
instantaneous
39
angular kinematics symbol
O with a line in between
40
how much is one radiant in degree
57.3 degrees
41
instantaneous acceleration
slope of a line tangent to a velocity time curve
42
instantaneous velocity
slope of a line tangent to a position time curve
43
what does the slope of a line determine on a graph
if its pos neg or 0
44
if velocity is positive what would acceleration be
positive (acceleration and velocity follow each others slope)
45
examine the minima and maxima of a curve, what does this tell
whats going on with the next dirivitie(acceleration as you know position and velocity)
46
peak pos and peak neg acceleration is identified were on the graph
at the highest point on the positive slope and the lowest point on the negative slope
47
what are the quantities of a vector
direction and magnitude
48
sim 0 is what
opp/hyp
49
cos 0 is what
adj/hyp
50
tom 0 is what
opp/adj
51
some old hippy cought another hippy tripping on acid
52
opp is what on a triangle
line going up
53
adj is what on a triangle
line that is the bottom one
54
hyp is what on a triangle
top line
55
to get 0 by itself make what negative
cos, sin, or tom