General Physics (exam 1)
Terms
copy deck

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

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 spacetime  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 âˆ† mean?
 a change in something

NAME
this means a change in something  âˆ†
 What is the name of this greek letter âˆ†?
 delta
 What is the differ quotient?
 âˆ†x/âˆ†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?
 âˆ† t

NAME
this represents the âˆ† t  the duration of a intervel
 what is âˆ† x?
 x2x1 or change in postion

NAME
this refers to the change in postion  âˆ† 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 âˆ† x? (2)
 (1)x2x1 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 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= âˆ† v/âˆ† t
 how do u find the a?
 a=âˆ† v/âˆ† t
 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?

acceleration
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)=dâˆ† x/dâˆ† t or lim âˆ† x/âˆ†t
âˆ† t0
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=âˆ† v/âˆ† 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 âˆ† tau?
 âˆ†t/n
 How do u find âˆ† v?
 <a>âˆ† 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+ (v1v0+v2v0)/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(xxo)  How formula do you use to find the v if no time is given?
 v^2=v^2+2a(xx0)
 What forumla to find the <v> can u use w any form of motion?
 âˆ† x/âˆ† t

T or F
<v>=âˆ† x/âˆ† t can be used to find <v> for any type of motion  true
 Can <v>=âˆ† x/âˆ† 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^2Vw+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^24AC 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^24AC
 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?
 Î” t/ Î” 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?

â†’
A or â†’ 
What does the symbol mean?
â†’
A  that A is a vector

â†’
A can indicate the (1)  mangintude
 (1) can indicate the mangintude

â†’
A or vector 
What does the following symbol stand for?
â†’
a  acceleration vector

What does the following symbol stand for?
â†’
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 â†’ â†’ â†’
C = A + B 
NAME TRiANGLE
Because this traingle has 2 vectors that are facing the same directions, â†’ â†’ â†’
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+gt
 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^22gy

Use Graph A,
â†’ â†’
(1)what is the A + B?  See answer key

Use Graph C,
â†’ â†’
(1)What is the sum of A + B?  see answer key for graph C
 Vectors obey the (1)law
 the parrelogram

â†’
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

â†’ â†’
A  B = (1) 
â†’ â†’
A+(B) 
â†’
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

â†’ â†’
A+(B) = (1) 
â†’ â†’
A  B