Unit A Flashcards
SI Units Length, Mass, Time
Length: Meter
Mass: kg
Time: seconds
CGS Units- length, mass time
Length: cm
mass: gram
time: seconds
British engineering units- length, mass, time
length: foot
mass: slug
time: seconds
tera (T)
10^12
Giga (G)
10^9
Mega (M)
10^6
Kilo (k)
10^3
centi (c)
10^-2
milli (m)
10^-3
micro(u)
10^-6
nano(n)
10^-9
pico(p)
10^-12
4 quarts- gallon
1 gallon
5280 feet= mile
1 mile
2000 pounds- ton
1 ton
how many weeks in a year
52
Accuracy
degree of closeness of a measured value to it’s true value
precision
how close a date set is to one another
Precision of a measurement through significant figures
smallest division + a decimal place
spring scale- tens place
Scalar quantity
measurements with magnitude (number but not direction
Tail to Head method
tail of the second vector to the head of the previous vector
R= tail to first vector to head of last vector
what is Ax when the vector is due east or west
cos
what is Ay when the vector is due east or west
sin
what is Ax when the vector is due north or south
sin
what is Ay when the vector is due north or south
cos
