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Flashcards in Test 1 Deck (41)
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0

vector forces what is a vector

magnitude and direction

1

two vector in the same direction are?

added

2

vetor on a graph

arwow starting at the origin or a rectangular graph

3

throw a ball at some degree what is the vertical component

y is the vertical velocity

4

newtons 2nd law

f = m*a

5

3rd law newton

an object in motion stays in motion

6

define inertia

the tendency of an object to resist a change in state

7

weight hangs from ceiling pull slow what happens

upper string breaks

8

pull fast

lower string breaks

9

car accident you hit the window which of newtons laws

1st law

10

staticcoefficient of friction

until you over come frictionn you wont move

11

biceps muscle what does all the force do

keep the joint fixed and move the load or hand

12

potential energy

stored energy

13

kinetic energy

energy in motion or mass times velocity

14

what is the formula for momentum

mass times velocity

15

define work

force times distance

16

work is not a unit of what?

Power

17

Torque

Force * Distance

18

Torque is what kind of motion

Rotational

19

women's center of gravity

through hips

20

for men the cog is

2 inches higher

21

1st class lever

tertoter

22

2nd class

fulcrom load action wheel barrow

23

3rd order

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.