Physics Introduction and Math Review

CP Physics

What is Physics?Branch of science which describes the physical worldDescribes the world using mathUses mathematical models to predict certain phenomena

Topics Covered In This Course

Linear MotionTwo Dimensional MotionNewton’s Laws and ForcesMomentumWork and EnergyRotational Motion

WavesSoundLightGeometric OpticsElectrostatics

The Metric SystemAll answers must be in standard units, which correspond to metric unitsSeconds, meters, and kilograms are standard units.

Metric Prefixes

Significant DigitsSignificant digits are important in labs in this class, not on tests or homeworkAll non-zero digits are significantZeros are more complicated

Zeros As Significant DigitsZeros between two

other significant zeros are significant

504 has 3 sigdigs 40.05 has 4 sigdigs

All final zeros afterthe decimal pointare significant Zeros used solely for spacing the decimal point are not significant

810 has 2 sigdigs 810.0 has 4 sigdigs

45 has 2 sigdigs 45.0 has 3 sigdigs

AlgebraLinear Relationships

y=mx+b

21

21

xx

yy

x

yslopem

b=y intercept

Quadratic Equations2kxy Creates a

parabola when graphed

0

20

40

60

80

100

120

-15 -10 -5 0 5 10 15

k effects graph wideness

Inverse Equations

x

ky Symmetric

around the line y=x

-5

-4

-3

-2

-1

0

1

2

3

4

5

-15 -10 -5 0 5 10 15

Solve for d

ddf

1

2

11

ddf 2

2

2

11

df 2

31

fd 32

fd2

3

Solve for x

413124 xx

x9

16x916

All terms with x’s on one side, all without on the other side

Intro to Triangle Trigonometry

Hypotenuse=h=the longest sideOpposite=o=the only side not in contact with Adjacent=a=the side in between and the right

angle

SOH-CAH-TOA

S sin equals

O opposite over

H hypotenuse

C cos equals

A adjacent over

H hypotenuseT tan equals

O opposite over

A adjacent

sine=sin cosine=costangent=tan

SOH-CAH-TOA

h

osin

h

osin

SOH Find the hypotenuse

oh sin

mo

h 23.1023sin

4

sin

Practice Problems

Identify which sides are being dealt with, the given and the unknownSelect the equation using SOH CAH TOAPlug and Chug

Inverse Trig FunctionsCalled inverse sine sin-1

Or arc sine arcsin

The relationship between sin and arcsin is the same as the relationship between x2 and x so that

Arcsin(sin )=

Practice Problem

Find