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341 Cards in this Set
- Front
- Back
T or F
the IS of units provides units of measurements for all purposes |
true
|
|
What is the basic unit of length?
|
m
|
|
NAME
its basic unit is m |
length
|
|
NAME
m = |
meters
|
|
What is the symbol for meters?
|
m
|
|
What is the basic unit for mass?
|
kg
|
|
NAME
its basic unit is kg |
mass
|
|
What does kg stand for?
|
kilogram
|
|
What is the symbol for kilogram?
|
kg
|
|
What is the basic unit of time?
|
s
|
|
NAME
its basic untit is s |
time
|
|
What is the basic unit of electric current?
|
A
|
|
NAME
its basic unit is A |
electric current
|
|
What does A stand for?
|
ampere
|
|
What is the symbol for A?
|
ampere
|
|
What is a mole?
|
is the amount of a substance
|
|
NAME
this refers to the amount of a substance |
mole
|
|
What is the symbol for mole?
|
mol
|
|
What does mol stand fro?
|
mol
|
|
What does K stand for?
|
Kelvin
|
|
What is the symbol for K?
|
kelvin
|
|
What is the base unit of thermodynamic temperature?
|
K
|
|
NAME
is base unit is K |
thermodyanmic temperature
|
|
What does the symbol cd stand for?
|
candela
|
|
What is the symbol for candela?
|
cd
|
|
What is the base unit of luminous intensity?
|
cd
|
|
NAME
its base unit is cd |
luminous intensity
|
|
How do u find speed?
|
distance/ divided by time
|
|
NAME
you find this by distance/time |
speed
|
|
what is the base unit of speed?
|
m/s
|
|
NAME
its base unit is m/s |
speed
|
|
How do u find density?
|
mass/vol
|
|
NAME
you can find this by mass/vol |
density
|
|
What is the base unit for density?
|
kg/m3
|
|
NAME
its base unit is kg/m3 |
density
|
|
What is G's prefix?
|
giga
|
|
NAME
its prefix is giga |
G
|
|
What is the prefix for M?
|
mega
|
|
NAME
its prefix is mega |
M
|
|
What is the prefix for k?
|
kilo
|
|
NAME
its prefix is kilo |
k
|
|
What is the prefix for m?
|
milli
|
|
NAME
its prefix is milli |
m
|
|
What is the prefix for u?
|
micro
|
|
NAME
its prefix is u |
micro
|
|
What is the prefix for n?
|
nano
|
|
NAME
its prefix is nano |
n
|
|
What value does G have?
|
10^+9
|
|
NAME
this has a value of 10^+9 |
G
|
|
What value does M have?
|
10^+6
|
|
NAME
this has a value of 10^+6 |
M
|
|
What value does k?
|
10^+3
|
|
NAME
this has a value of 10^+3 |
k
|
|
What value does m?
|
10^-3
|
|
NAME
this has a value of 10^-3 |
m
|
|
What value does u have?
|
10^-6
|
|
NAME
this has a value of 10^-6 |
u
|
|
What value does n have?
|
10^-9
|
|
NAME
this has a value of 10^-9 |
n
|
|
1 m = (1)
|
100 cm
|
|
1 (1)= 100 cm
|
m
|
|
NAME
this is the science of matter and interactions |
physics
|
|
NAME
are influences that act btwn things |
interactions
|
|
Where does the word physics come from?
|
the greek word physis for nature
|
|
NAME
this comes from the greek word physis for nature |
physics
|
|
What do physicists want to do?
|
know how nature works
|
|
T or F
physics can be done w out mathmatics |
false
|
|
What are (3) steps to doing physics?
|
(1)seek simplicity (2)do experiments (3)use math
|
|
What do interactions involve? (4)
|
(1)forces (2)feilds (3)energy (4)momentum
|
|
What are the (5) great theories?
|
(1)classical mechanics (2)thermodynamics (3)electromagnistm (4)theory of relativity (5)quantum mehcanics
|
|
NAME
these include classical mechanics, thermodynamics, electromangistm, theory of reativity and quanntum mechanics |
the great theories of physics
|
|
What is the theory of classical mechanics?
|
is a theory on motion and gravitation
|
|
NAME
this is a theory on motion and gravitation |
theory of classical mechanics
|
|
What is the theory of thermodynamics?
|
is a theory of thermal phenomena
|
|
NAME
this is a theory of thermal phenomena |
themodynamics
|
|
What is the theory of electromagentism?
|
is a electromagentic field theory
|
|
NAME
this is a electromagenitic field theory |
electromagentism
|
|
What is the theory of relativity?
|
is a theory of feilds in space time
|
|
NAME
this is a theory of feilds and space-time |
theory of relativity
|
|
What is the theory of quantum mechanics?
|
is the theory of fundamental processes
|
|
NAME
this is a theory of fundamental processes |
quantum mechanics
|
|
NAME
plays a role in astronomy, biology, chemistry, and the earth sciences |
physics
|
|
NAME
this provides support for the other natural sciences |
physics
|
|
What is kinematics?
|
is the mathamatical description of motion
|
|
NAME
this is the mathmatical description of motion |
kinematics
|
|
What is the word dynamics used for ?
|
to explain why a motion occurs
|
|
x(t) can also refer to (1)
|
the x axis
|
|
(1) can also refer to the x axis
|
x(t)
|
|
What does x(t)indicate?
|
the postion of something moving in time
|
|
NAME
this indiactes the postion of something moving in time |
x(t)
|
|
What does x refer to ?
|
the postion of something
|
|
NAME
this refers to the postion of something |
x
|
|
What does ∆ mean?
|
a change in something
|
|
NAME
this means a change in something |
∆
|
|
What is the name of this greek letter ∆?
|
delta
|
|
What is the differ quotient?
|
∆x/∆t
|
|
What is postion?
|
is a function of time
|
|
NAME
this is a function of time |
postion
|
|
What is time?
|
it can not be explained
|
|
NAME
this question canot be answered |
what is time
|
|
x means the samething as (1)
|
x(t)
|
|
(1) this means the samething as x(t)
|
x
|
|
A (1) occurs btwn 2 times
|
change in postion
|
|
A change in postion occurs btwn (1)
|
2 times
|
|
What is the time interval?
|
[t1,t2]
|
|
What does the greek letter tau mean?
|
is the greek letter for t'
|
|
NAME
this is the greek letter for t' |
tau
|
|
What is the duration of a interval?
|
∆ t
|
|
NAME
this represents the ∆ t |
the duration of a intervel
|
|
what is ∆ x?
|
x2-x1 or change in postion
|
|
NAME
this refers to the change in postion |
∆ x
|
|
What does a strobe photo do?
|
exhbits motion as a succession of displacements
|
|
NAME
this exhibits motion as e succession of displacements |
strobe photo
|
|
Draw the (2)differ types of motion and label them
|
see notes
|
|
Draw the most common type of motion
|
see notes
|
|
How do u find ∆ x? (2)
|
(1)x2-x1 or (2)[x(t2)-x(t1)]
|
|
In what type of motion is the velocity a constant?
|
motion in striaght lin
|
|
What type of motion does not always have a consant motion? Draw picture
|
movement down a incline such as what galio did (see notes for pic)
|
|
(1)and (2)are called infintesimals
|
dt and dx
|
|
dt and dx are called (1)
|
infintesimals
|
|
T or F
v is the same thing as speed |
false
|
|
are velocity and speed the same thing?
|
no
|
|
NAME
he studied a simple motion w variable velocity |
galileo
|
|
What did galileo study ?
|
a simple motion w variable velocity
|
|
V(0) can also mean (1)
|
v0
|
|
(1) can also mean V0
|
V(0)
|
|
What is v stand for?
|
velocity
|
|
What is v?
|
is the rate of change of postion w respect to time
|
|
NAME
this is the rate of change of postion w respect to time |
v
|
|
What is v?
|
is the rate of change of postion w respect to time
|
|
What is free fall?
|
refers to when u throw a ball striaght up in the air
|
|
NAME
refers to when u throw a ball striaght up in the air |
free fall
|
|
Draw a pic of free fall including labels
|
see notes
|
|
how do u find the accelration?
|
a= ∆ v/∆ t
|
|
how do u find the a?
|
a=∆ v/∆ t
|
|
What does a stand for?
|
acceleration
|
|
going up has a (1)accelration
|
postive
|
|
going down has a (1)acceleration
|
negative
|
|
What is a?
|
is the rate of change of v w respect to time
|
|
NAME
this is the rate of v w respect to time |
a
|
|
What does the word accelartion mean in latin?
|
ac-celera-tion
ac= means more celera= latin means "celeritas" or celerity meaning faster |
|
NAME
part of this word comes from the latin word "celeritas" or celerity meaning faster and ac for more |
aceleration
|
|
How do u find energy?
|
E=mc62
|
|
How do u find V(t)?
|
V(t)=d∆ x/d∆ t or lim ∆ x/∆t
∆ t-0 NOTE: the derivative we already be given in the problem but it will not tell u that it is the derivative |
|
How do u find a?
|
a=∆ v/∆ t
|
|
what is the speed of light?
|
c= 3 *10^8
|
|
Draw a graph showing the differ parts from t1 to t2.
Be sure to label |
see notes
|
|
How do u find ∆ tau?
|
∆t/n
|
|
How do u find ∆ v?
|
<a>∆ t
|
|
how do u find ∆ v?
|
<a>∆ t
|
|
what do the symbols <> mean?
|
the sum of what is it in
|
|
Most cars have a (1)acceleration
|
smooth or constant
|
|
you have a (1)accelration when u brake
|
negative
|
|
When driving your care, you have a negative accelration when you (1)
|
brake
|
|
What does each symbol mean for the following formula?
V=Vo +<a>t |
V=veliocity
Vo=inital veliocity <a>=average acceleration t=time |
|
How do u find velocity?
|
V= vo +
|
|
What does x stand for?
|
a postion in time
|
|
How do u find x?
|
x=xo+<v>t
|
|
What do the following symbols mean?
x=xo+<v>t |
x= postion in time
x0= inital x <v>=average veliocity t=time |
|
What are (2)MAIN forumlas u can use only when the acceleration is constant?
|
(1)v=v0+at
(2)x=xo+1/2(vo+v)t |
|
What dedication can you make about the <v> if there are the same amount of numbers, meaning the accerlation is constant? (2)
|
that <v> can equal the number in the middle or the midpoint
<v>= vo+v/2 (2) Therefore x=vo + at1+a2t2/2 or x=vo+ 1/2(vo+v) NOTE: the same applies for anything else such as tau |
|
When can <v>=1/2(vo+v)t or <v>=vo+a1t1+at2/2?
|
when the are the same number of intervals then the average number is hte middle number or a constant accerlation
|
|
When there are equal amounts of numbers being equal distance from each other , meaning hte accerlation is constant then (1)
|
the average is the midpoint or middle number
|
|
if u have two different times and the numbers where equal, how would u find the <v>?
|
a(t)1=v
<v>= vo+ (v1-v0+v2-v0)/2 |
|
v=vo+at is similar to the (1) algerbraic theory when graphing
|
y=b+mx
|
|
(1)is similar to the y=b+mx theory when graphing
|
v=vo+at
|
|
What are the (4) formulas that can used if the accerlation is constant? (including the 2 that are dervied from the main 2).
|
(1)v=vo+at (2)x=xo+1/2(vo+v)t
(3)x=x0+v0+t1/2at^2 (4)V^2=v^20+2a(x-xo) |
|
How formula do you use to find the v if no time is given?
|
v^2=v^2+2a(x-x0)
|
|
What forumla to find the <v> can u use w any form of motion?
|
∆ x/∆ t
|
|
T or F
<v>=∆ x/∆ t can be used to find <v> for any type of motion |
true
|
|
Can <v>=∆ x/∆ t be used to find <v> for any type of motion?
|
yes
|
|
How would u graph the accerlation?
|
see notes
|
|
How would u graph the accerlation w x?
|
see notes
|
|
When working do not forget to put the (1)
|
untis and work out the math for the units by mulptying them out as well
|
|
If a is zero then (1)
|
the v is constant
|
|
if a is (1) then the v is constnat
|
0
|
|
1/2At^2-Vw+d=0 is similar to the (1)algerbaric expression and can be solved using the (2)formula
|
(1)Ax^2+Bx+C (2)quad
|
|
What is the critcal case?
|
refers to when something min amount a object can reach a certain point in time
|
|
What is the discrimint?
|
B^2-4AC of the quad formula
|
|
NAME
this always has a physical signficance |
discrimint
|
|
The (1)can be used to find the critical case
|
discrimint
|
|
the discrimint can be used to find the (1)
|
critical case
|
|
How do u find the critical case?
|
critcal v= v = B^2-4AC
|
|
If u throw something up in the air, would a be postive or negative? Why?
|
negative bc u are going against gravity
|
|
If a ball is falling from a building, would its a be postive or negative? Why?
|
postive bc gravity is centered toward the middle of the earth
|
|
What is g on earth?
|
9.8 m/s^2
|
|
When throwing a ball vertically or striaght up into the air, when the max height is reached, what is the v?
|
0
|
|
When throwing a ball striaght up into the air or vertically, what when will the v equal zero?
|
when the ball reaches its max height
|
|
What is the slope of a graph?
|
Δ t/ Δ v
|
|
What did Galieo say about free falling objects?
|
he said any object at free fall w out air resistance near earth's gravity has a constant accerlation
|
|
Any object at free fall w out air resistance near earth's gravity has a (1)
|
constant accerlation
|
|
Why do two objects such as a peice of paper (not crumbled up) and a rock dropped do not land on the ground at the same time?
|
bc of air resistance
|
|
What does y1 stand for?
|
the max hieght of a free falling object
|
|
NAME
this represnts the max height of a free falling object |
y1
|
|
T or F
A car can only have a constant a |
false
|
|
What is scalar quanity?
|
is ordinary number
|
|
NAME
this refers to a ordinary number |
scalar quanity
|
|
What is a vector?
|
is a directed quanty of numbers
|
|
NAME
this is a directed quanity of numbers |
vector
|
|
What is the main differ btwn a vector and scalar?
|
a vector has a directional space where as a scalar does not
|
|
NAME
the main differ btwn a scalar and this is that it has a directional space and a scalar does not |
vector
|
|
What are some examples of scalars? (2)
|
(1)mass (unassigned numbers) (2)charges (signed numbers
|
|
NAME
examples of these include mass (unassigned numbers) and charges (signed numbers) |
scalars
|
|
T or F
scalars do not always have to have signs |
true
|
|
Do scalars always have to have signs?
|
no
|
|
Does mass have signed or unsigned numbers?
|
unsigned
|
|
Does charges have signed or unsigned numbers?
|
signed
|
|
What are some examples of vectors? (2)
|
(1)displacement (2)force
|
|
NAME
some examples of these are displacement and force |
vectors
|
|
What is displacement?
|
refers to a change in postion
|
|
NAME
this refers to a change in postion |
displacement
|
|
NAME
this is simplest vector |
displacement
|
|
Displacement is the (1)vecotor
|
simplest
|
|
What is force?
|
refers to a push or pull
|
|
NAME
this refers to a push or pull |
force
|
|
What notation represents a vector?
|
→
A or → |
|
What does the symbol mean?
→ A |
that A is a vector
|
|
→
A can indicate the (1) |
mangintude
|
|
(1) can indicate the mangintude
|
→
A or vector |
|
What does the following symbol stand for?
→ a |
acceleration vector
|
|
What does the following symbol stand for?
→ v |
instantious velocity vector
|
|
The (1) of a vector is the scalar
|
mangintude
|
|
The magintidue of the vector is the (1)
|
scalar
|
|
Vector lie in (1) and (2) diminesions
|
1D and 2D
|
|
What is a right triangle?
|
a triangle w a 90 degree
|
|
When you have a right traingle, u can use what formula?
|
a^2+b^2=c^2
|
|
What is a line segment triangle? (2)
|
refers to when 2 vectors are going in the same direction (2)therefore, the → → →
C = A + B |
|
NAME TRiANGLE
Because this traingle has 2 vectors that are facing the same directions, → → → C = A + B |
a line segment traingle
|
|
Can u add two differ types of vectors?
|
no
|
|
T or F
u can add two different types of vectors |
false
|
|
How do u find the v of a free falling object?
|
v=v0+|g|t
|
|
How do u find y for a free falling object?
|
y= v0 + t- 1/2gt^2
|
|
T or F
u can have a negative gravity |
false
|
|
Can u have a negative gravity?
|
no
|
|
If you are not giving the time of a free falling object, how do u find the v?
|
v^2=v^2-2gy
|
|
Use Graph A,
→ → (1)what is the A + B? |
See answer key
|
|
Use Graph C,
→ → (1)What is the sum of A + B? |
see answer key for graph C
|
|
Vectors obey the (1)law
|
the parrelogram
|
|
→
What does S stand for? |
the sum of two vectors
|
|
T or F
the order of the sum of the vectors matters |
false
|
|
Does the sum of the vectors depend on the order they are in?
|
no
|
|
Vectors that are (1)from each other equal
|
adjacent or across from each other
|
|
Vectors that are ajacent from each are (1)
|
equal
|
|
T or F
adjacent or vectors across from each other have equal displacements |
true
|
|
→ →
A - B = (1) |
→ →
A+(-B) |
|
→
What does D stand for? |
the difference btwn two vectors
|
|
T or F
can have a negative value for a vector |
false bc vectors are unsigned numbers
|
|
Can you have a negative value for a vector?
|
no
|
|
Why can you not have a negative number for a vector?
|
bc vectors are unsigned numbers
|
|
→ →
A+(-B) = (1) |
→ →
A - B |
|
What is this called?
→ → B + (-B)=0 |
the zero factor
|
|
→ →
B + (-B)=(1) |
0
|
|
→
D=(1) |
→ → → →
A-B=A+(-B) |
|
You watching a car speeding up down the road. The car is moving in a curve.
Draw a diagram and explain how you would find the displacement from when you saw the car and when you last saw the car |
see diagram B on the answer key
|
|
Using Graph B,
→ (1)how would u find X? |
→ → →
r1 + Δr = r2 |
|
The order of the vectors is important when (1)vectors
|
subtracting
|
|
The (1)of the vectors is important when subtracting the vectors
|
order
|
|
→
D can also equal (1) |
→
-D |
|
→
(1)can also equal -D |
→
D |
|
→
What does P stand for? |
the product of a vector and scalar
|
|
→
How do you find the P? |
→ →
P= kC |
|
→
(-1)C can also be written as (1) |
→
-C |
|
→
(1)can also be written as -C |
→
(-1)C |
|
What is newton's law of motion?
|
→ →
F= ma |
|
Id the what the differ symbols stand for in Newton's law of motion?
→ → F= ma |
→
F= vector of total force on a object m= mass → a= vector of acceleration |
|
What does vector components?
|
refers to x coordinates
|
|
NAME
this refers to x coordinates |
vector components
|
|
Using graph D,
how would you find vector V? |
by adding Vx and Vector Vy
|
|
What are unit vectors?
|
they have a magintude of 1
|
|
NAME
these vectors have a mangintude of 1 |
unit vectors
|
|
What does vector Vx equal?
|
iVx
|
|
What does vectors Vy represent?
|
jVy
|
|
NAME
this represents i(vector Vy) |
Vector Vy
|
|
NAME
shi represents i(vector Vx) |
Vector Vx
|
|
Graph the following VECTOR
3i+2j |
see graph E
|
|
Graph the following VECTOR
-3i+2j |
see graph F
|
|
Graph the following VECTOR
-3i-2j |
See graph G
|
|
Graph the following VECTOR
3i-2j |
see graph H
|
|
Using graph I,
what is A, B, and C? |
A=Vx
B=Vy C=V |
|
If the angle is rotated clockwise the angel is a(1)angle
|
postive
|
|
If a angle is roated (1)than the angle is postive
|
clockwise
|
|
If a angle is rotated (1)than the angle is negatitve
|
counterclock wise
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If an angle is rotated counterclock wise than the angel is (1)
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negative
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Vector Vx =
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i (vector Vx)
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How do u find sin, cos, and tan?
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SOHCAHTOA
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What is sec?
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1/cos
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What is csc?
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1/sin
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NAME
1/sin |
csc
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NAME
1/cos |
sec
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What is cot?
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1/tan
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NAME
1/tan |
cot
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If you are given the V(magnitude) and the angle alpha how would u find Vx and Vy?
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Vx= Vcos= +/- cos alpha
Vy= Vsin= +/- sin beta |
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What trig funciton can be used to find x or vector Vx?
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cos
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What trig function can be used for find the vector Vy?
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sin
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Given S<angle and T<angle, find the sum of the two vectors
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S= iSx+jSy+ iTx+jTy
S= i(Sx+Tx)+j(Sy+St) Sx=i(Sx+Tx) Sy=j(Sy+St) |
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y going up is (1)
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postive
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y going down is (1)
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negative
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y going (1)is negative
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down
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y going (1)is postive
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up
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if a object is falling down the g is (1)
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postive
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if a object is (1)then g is postive
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falling down
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If a object is thrown up into the air then the the g is (1)
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negative
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If a object is (1)than the g is negative
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thrown up into the air
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Given A=90<160 and B=75<300
what is S? |
graph
Ax+Bx=90cos160+75cos300 Sx=47.7 m Sy= Ay+Ab=90sin160+75.5sin300= -34.17 |
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What are some types of kinematical vectors? (3)
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(1)postion vectors (2)velocity vectors (3)aceleration vectors
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NAME
these include postion vectors, velocity vectors, and accerlation vectors |
kinematical vectors
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A plane convex path is just a (1)
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parabala
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A (1) is just a parabola
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plan convex path
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Why can you not break a S up int p indvidual curves?
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if u draw a line from the start and finish line the line intersects the middle
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What does tangent mean?
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it means that a line touches a curve once
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NAME
this means the line touches the curve once |
tangent line
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NAME
this means that the line touches the line twice |
secant
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What does secant to the line mean?
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it means that the line touches the other line twice
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Given that a person watches a curve go around a curve from until they can no longer see them. Draw a pic showing what they saw and how you find out the displacement the car traveled from the time the person saw them till the time they could not see them any longer
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see graph D on the answer sheet
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the mangintude is the (1)of a vector
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v(t)
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the (1)is the v(t) of a vector
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magnitude
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<vector v> = (1)
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Δ vector r/ Δ vector t
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Can you drive a car around a car at a constant speed?
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yes but slowly
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if vector v1 and vector v2 are equal then it is a (1)
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isolceles traingle and two of the angles are equal to 90 degrees and bc of this u can conclude that that triangle is perpendicular
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If (1) then you conclude that the traignle is a isoslacles traingle and that it has two 90 degree angles and is perpendicular
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vector v1= vector v2
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Suspose something is moving around in a circle around a object at a constant speed
(1)draw pic of the differ vectors and what it would look like (2)what can you conclude? |
(1)see graph J on the (note card)
(2)that there are right angles in the circle and there is a constant magnitude but the accerleration is different |
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When a object goes around a curve, at what point is v constant? draw a pic of ure answer
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see graph K,
Answer= vector B |
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When a obeject is going around a curve, at what point is v decreasing?
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see graph K,
Answer= vector A |
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When a object goes around a curve at what point is v increasing?
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See graph K,
Answer= vector C |
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Using graph K,
For vector A, (1)what is the v doing? (decreasing, remaining constant, or increasing) (2)What is the angle? |
(1)decreasing
(2)obtuse |
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Using graph K,
For vector B, (1)what is the v doing? (decreasing, remaining constant, or increasing) (2)What is the angle? |
(1)v is constant
(2)right angle |
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Using graph K,
For vector C, (1)what is the v doing? (decreasing, remaining constant, or increasing) (2)What is the angle? |
(1)v is increasing
(2)the angle is a acute angle |
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A car goes around a curve, draw a pic of the differ directions the vectors can be in.
(2)label any observations or conclusions that can be made bc the object is going around a curve |
see graph E(answers,
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At the perpendicular point of the curve, v is (1)
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constant
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vector a = (1)
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vector a= Δ vector v / Δ vector t
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How do you find vector a?
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Δ vector v / Δ vector t
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How do u find vector v for any motion?
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Δ vector x /Δ vector t
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With ideal projectile motion, u start time and the postion at (1)
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0 or the orgin
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How do u find the range of a vector?
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R=v^2sin2θ/g
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Sin2θ=
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2sinθcosθ
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(1)=2sinθcosθ
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sin2θ
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If both balls are falling down on the postion of the y axis then (1)
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both balls will hit the ground at the same time
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What is the law of inersa?
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w/out forces a object would keep on moving in a line w a constant speed
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NAME
w/out these, a object would keep on moving in a line w a costant speed |
force
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What would happen if there where no forces acting on a moving object?
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the object would keep moving in a line w a constant speed
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Using graph L (note card,
what would the object thrown look like w out any forces acting on it such as gravity? draw in vector v(t)? |
see graph graph F (answers
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