Test 1 Flashcards

(41 cards)

0
Q

two vector in the same direction are?

A

added

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1
Q

vector forces what is a vector

A

magnitude and direction

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2
Q

vetor on a graph

A

arwow starting at the origin or a rectangular graph

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3
Q

throw a ball at some degree what is the vertical component

A

y is the vertical velocity

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4
Q

newtons 2nd law

A

f = m*a

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5
Q

3rd law newton

A

an object in motion stays in motion

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6
Q

define inertia

A

the tendency of an object to resist a change in state

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7
Q

weight hangs from ceiling pull slow what happens

A

upper string breaks

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8
Q

pull fast

A

lower string breaks

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9
Q

car accident you hit the window which of newtons laws

A

1st law

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10
Q

staticcoefficient of friction

A

until you over come frictionn you wont move

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11
Q

biceps muscle what does all the force do

A

keep the joint fixed and move the load or hand

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12
Q

potential energy

A

stored energy

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13
Q

kinetic energy

A

energy in motion or mass times velocity

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14
Q

what is the formula for momentum

A

mass times velocity

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15
Q

define work

A

force times distance

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16
Q

work is not a unit of what?

17
Q

Torque

A

Force * Distance

18
Q

Torque is what kind of motion

19
Q

women’s center of gravity

20
Q

for men the cog is

A

2 inches higher

21
Q

1st class lever

22
Q

2nd class

A

fulcrom load action wheel barrow

23
Q

3rd order

A

force in middle biceps

24
What kind of lever is the head
1st order
25
Balance platform | Limits of stability where
inbetween the feet when standing static if you lean forward it moves past toes then you fall
26
Wheel chair stability
in front of the axle
27
Plasticity
bends nd stays bent not broken
28
elasticity
returns to normal
29
fracture
at end of plastic region
30
is bone plastic
no elastic
31
if you jump off a table what prevents muscle tears
tendons (elastic)
32
What causes a spiral fx
spin
33
what protects bone joints
hyaline cartilage
34
diagram stressstrain relation
read it
35
discs elastic?
yes when older they get dehydrated
36
ox across knee rotation should be
over the center of the knee.
37
standing on toes what kind of lever
2nd class
38
is muscle linear or non linear force generator
non linear
39
Pennate is weaker or stronger then long?
Stronger
40
Newtons 1st law
an object at rest will stay at rest unless acted upon.