PHY 201 Study Guide - Fall 2018, Comprehensive Midterm Notes - Trigonometric Functions, Asteroid Family, Wicket-Keeper
PHY 201
MIDTERM EXAM
STUDY GUIDE
Fall 2018
7121 (Introduction >
significant figure =SF rules
.
!1!All nonzero #Sare SF
!2!Zero between nonzero #sare SF (ex ;101.203
*6sF* )
!3!leading who is not SF (ex :0.052 *28F• )
@Decimal Point +Trailing zeros are SF
!5!W10 Decimal Polht Trailing zeros (ex ;735000 has 6SF )
ex )density 5.23×10 -6M¥ →k§_m
5. 23×10-6 kg/mm3 ×
"
i
"
→(90m0mM-)3
5.23×10
-6kg ×109
m= =5,23×103 KSM
3
Dimension aDimensional Analysis
*In Eauation add subtract equated same dimension •
ex )V=Vo tat [a]?SI unit ?
VI =a
unit isnf÷=m@ [a
]=[Yyh9eMg?P
position of
ex )E=tzmv '
+tzkk '
object .
¥dimensionless .
[E]=
[mass ]k¥2 5I=kgm÷
[time ]
'
[k][
lengthy
:[ mass
]aeng#' =ftp.amse#sI=ksI.
[time ]2
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(7123 Chapter 2:kinematics in ID >
kinematics -how an object moves
M¥9
<dynamics -when the object moves that way (Force )
mathematical point
motion -translation size
-\rotation \volume size
average speed vs .average velocity
II
distance displacement t.IE#=0I
time time 0t
instantaneous velocity
~=E÷=oitm→o ;÷=x ,//v=T÷ =at "
⇒xctk Ante ec
↳* Send ,c=E÷ to
average acceleration vs. instantaneous acceleration
4E=d vz -v.4a= E
of =-dt
Tr -Ti
position dx velocity du acceleration
F-
#car starts
KV
-
A/
tanka {Iowa
:
constant ✓
ex )object moves along xaxis
✓Lt )=-3t
'
-2(mis )
fact
= (s)=2m
a)position@=?
K=Sv (t)dt =
-Es -Zt tc
Xltels )=-13 -2tc =2so C= 5
Klt )=-t3 -Zt +5
k(t=2 )=-f-4+5 =-12+5=-70
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Document Summary
Eauation add subtract equated same dimension ex ) Vi a unit isnf =m@ [ a position of ex ) e = tzmv " tzkk object. < dynamics translation rotation motion object moves that way. Force ) size mathematical point volume size average speed vs . average velocity. 4a= e dt position dx velocity du acceleration. { iowa: constant ex ) object moves along x axis. = if = ( called a fneauency ) length. 213mg " c) compute avg . velocity between t= is t t=2s j =8 =l2at4bfila+# = Vgg a) ymax b) when back to helght. A when object goes up v is @ vise versa. Scalar only magnitude distance mass time temperature addition of vector. C resulting vector multiplying a vector by scalar. 730km/h t encounters tailwind that boosts its speed to. Os how far did it more between t: os t t. 10. 7mhz at t=2 the velocity is v= utat.
