physics test 1

fundle mental propertie of distance is ____ and his historically tied to object like the _____ and later defined by the distance light travels in a ____

M

north pole

vacuum

Fundemtal physical properties of mass, historically bsed on a specific _____ _____ cylander

kg

platinium

iridium

Fundamental propertie of duration/ time measured in____ defined by the radiation period of —— ____ atom

cesium-133

what are the two mesurment systems

imperical and metric

imperical length

ft

imperical mass

lb or slug

imperical time

s

micro is what value of 10

10^-6

mili is what value of 10

10^-3

centi is what value of 10

10^-2

kilo is what value of 10

kilo 10³

zero rules what is signifcant

trailing if decimal point,

multiply and dividing sig fig rules

round to the lowest number of sig figs found in any starting number

sig fig adding and subtracting

match to the smallest number of decimal places

displacement def

straight line vector change in position from start to finish delta x is equal to xf- xi

average velocity def

total displacement divided by total time delta x divided by t

speed def

scalar rate at which distance is covered over time ignoring direaction

instintanaous velocity

the velocity of an object at one exact specific moment in time

acceleration:

the rate at which velocity changes over time

uniform motion def

constant veolcity in a straght line, acceleration is 0, representative by a straight line with a constant slope lineaer

to find instanious slope or velocity or acceleration on a curved graph you do this by???

finding the slope on the tangent graph

to find slope v and average v on graphs the formula is

y2-y1/x2/x1

how to find magnitude of R

pythagoren therom

how to find the x and y parts of vectors in r= A+B

angel times sin

and angle times cos =x

then pultiply by number

how to find angle in vector when only given rx and ry

tan -1 (ry/rx)

vector arrow and bold form explain

arrow above= vector

bold = scalar

magnitude and angel form vector explain

given like 5m at 45 degree

component form does what and how is it written explain i and j

splits into x or y parts of the vector, or i and j i being x and j being. y

angel bracket form vectors explain

gives points in brakets describing x and y components