AP PhysicsTuesday 13.08.13Standards: NAObjective: SWBAT solve equations.Agenda1. Warm Up2. Syllabus 3. Solving Equations
HomeworkAP Physics Worksheet1. a-h2. a-l
Warm Up
Why are you taking AP Physics?
AP PhysicsWednesday 13.08.14Standards: NAObjective: SWBAT convert from standard form to scientific notation and back.
Agenda1. Warm Up2. Correct Homework3. Conversion Refresher4. Conversion Practice
HomeworkAP Physics Worksheet3, 4. a-n
Warm Up
Convert my height 5’’9’ into into meters. If you need to search for the conversion factor on the internet, go ahead.
AP PhysicsThursday 13.08.15Standards: NAObjective: SWBAT convert from standard form to scientific notation and back.
Agenda1. Warm Up2. Correct Homework3. Extra Practice Equations &
Conversions4. Geometry & Trig Skills are pushed
back to Friday.
HomeworkExtra Practice Equations & Conversions
Warm Up
Solve for Fap .(ma=Fap-μmg+mgcosθ)
AP PhysicsFriday 13.08.16Standards: NAObjective: SWBAT convert from standard form to scientific notation and back.
Agenda1. Warm Up2. Correct Homework3. MKS System4. Geometry & Trig Skills are pushed
back to Friday. HomeworkGeometry & Trig Skills5a-f, 6a-f, 7 a-h
Warm Up
Principles for Solving Equations
The following are guidelines to keep in mind when attempting to solve equations.
Techniques 2• In more complicated equations
isolate your variable step by step.
1. First make sure the term with the variable is by itself.2. Next make sure the variable is by itself3. Finally get rid of any exponent attached to the variable. 4. Optional: Lastly you might want to simplify or clean up the solution.
-10z-10z
77
1
2
3
4
The Fundamental Unitsmeter m lengthkilogram kg masssecond s timeampere A electric currentmole mol quantity of matterkelvin K temperaturecandela cd intensity of light
MASSMeasures the quantity of matter
Matter is anything that takes up space
The Standard kilogram measurement is the mass of an actual Pt-Ir alloy cylinder kept in France
TIMETime is set and measured based on 9,192,631,700 oscillations of the radiation from a certain transition in a cesium atom
Derived Units(composed of multiple basic units)Area m2 Volume m3
Density kg/m3 or kgm-3
Speed m/s or ms-1
Metric System Chart
Prefix-Unit Symbol How many are in a meter?
Proportion used for conversion into 1
Proportion used for conversion into 2
Mega-seconds Ms 1Ms=106s 1,000,000 s 1Ms
___1Ms__ 1,000,000 s
Kilo-seconds ks 1ks=103s(1ks=1000s)
1,000 s 1 ks
___1ks__ 1,000 s
_____seconds _s ------ ------ -------
Centi-seconds cs 102 cs=1s(100cs=1s)
100 cs 1s
__1s__ 100 cs
Milli-seconds ms 103ms=1s(1000ms=1s)
1,000 ms 1s
__1s__ 1000 ms
Micro-seconds s 106s=1s 1,000,000 s 1s
__1s__
1,000,000s
Nano-seconds ns 109ns=1s 1,000,000,000 ns 1s
_1s__1,000,000,000ns
Chart of Metric System Prefixes
Base unit symbols: K, m, L, A, g, s
Wherever you see an underscore ( ___) insert the Symbol of the base units you will use in your problem.
Example, one type of unit is meters. The symbol for meters is m. Everywhere you see an underscore, insert an m
1 Step Conversion• 1 step conversion occur when you convert from a base unit to
a unit with a prefix or vice versa.• Example. A. Convert 1000 m -> km • B. Convert 50 mm-> m
• In order to do conversions we first set up a proportion and we use a technique called dimensional analysis to evaluate the proportion.
Dimensional Analysis• What is a dimension? • A dimension is just another name for fundamental or base
quantities. • Example: Length, mass, and time are all dimensions. • By analyzing these dimension and performing math on these
dimensions as if they were numbers, we can strengthen our problem solving abilities, and in particular we can do unit conversions very simply.
Back to the Example 11. Example. A. Convert 1000 m -> km Step 1:
Step 2:
• The question asks me to convert 1000m to km so how did I know to use the proportion 1km/1000m?
• Dimensional Analysis. • If I want my units to to be kilometers then I need to set up a proportion so
that meters completely cancel out of the problem and only kilometers are left on the numerator.
2 step conversions• In 2 step conversion you’re converting from a prefixed unit to
another prefixed unit. Ex. Convert 6mg->ng
• This is called a 2 step conversion because you need to convert into the base unit (g) before you convert to the final prefixed unit.