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# Physics - LG

### Ch.1-3

Problems of the U.S. customary system of measurement is Some units are historic, many of them are unfamiliar, converting one unit to another is often difficult.
tera- Symbol: T Meaning: trillion Power of Ten: 10 to the 12th power Value: 1,000,000,000,000
giga- Symbol: G Meaning: billion Power of Ten: 10 to the 9th power Value: 1,000,000,000
mega- Symbol: M Meaning: million Power of Ten: 10 to the 6th power Value: 1,000,000
kilo- Symbol: k Meaning: thousand Power of Ten: 10 to the 3rd power Value: 1,000
centi- Symbol: c Meaning: hundredth Power of Ten: 10 to the negative 2nd power Value: 0.01
milli- Symbol: m Meaning: thousandth Power of Ten: 10 to the negative 3rd power Value: 0.001
micro- Symbol: upside down h Meaning: millionth Power of Ten: 10 to the negative 6th power Value: 0.000001
nano- Symbol: n Meaning: billionth Power of Ten: 10 to the negative 9th power Value: 0.000000001
pico- Symbol: p Meaning: trillionth Power of Ten: 10 to the negative 12th power Value: 0.000000000001
femto- Symbol: f Meaning: quadrillionth Power of Ten: 10 to the negative 15th power Value: 0.000000000000001
Properties are the qualities or attributes that, taken together, are usually peculiar to an object.
Measurement a comparison. a process of comparing a property to a well-defined and agreed-upon referent. The well-defined and agreed-upon referent is a standard called a unit.
The most two common systems of units are: The English System and the Metric System (Le Systeme International d' Unites) or SI.
Length Metric Unit: meter Symbol: m
Mass Metric Unit: kilogrm Symbol: kg
Time Metric Unit: second Symbol: s
Current Metric Unit: Ampere Symbol: A
Temperature Metric Unit: Kelvin Symbol: K
Amount of Subsance Metric Unit: Mole Symbol: mol
Luminous Intensity Metric Unit: Candela Symbol: cd
4 Fundamental Properties of the Metric System Length, Mass, Time, Charge
The standard unit of Length meter
The standard unit of Mass kilogram
The standard unit of Time second
The value of a second is based off of the vibrations of the cesium-133 atom
speed change in position over change in time d/t distance/time
velocity change in position over change in time df - di/tf - ti
acceleration change in velocity over change in time vf - vi/tf - ti
If the acceleration is in the direction of motion it is positive
If the acceleration is in the opposite direction of motion it is negative
average speed distance/time m/s
average velocity change in position/change in time m/s
acceleration change i velocity/change in time m/s2
find vf vi + at
find vf2 vi2 + 2ax
find x vit + 1/2at2
acceleration due to gravity (g) 9.8m/s2
Inertia an object's tendency to resist changes in it's motion.
Newton's Laws of Motion 1 - Inertia 2 - Related Force to Acceleration 3 - Action - Reaction
Four Fundamental Forces 1- gravitational 2- electromagnetic 3- strong nuclear 4 - weak nuclear
1 Newton 1kg x m/s2
Weight (W) measure of the force of gravity on a mass. Measured in Newtons
Normal Force (N) always perpendicular to a surface, surface pushing back, electromagnetic force in nature
Created by: Lanie