Physics 1 Chapter 1 - Introduction and Mathematical Concepts
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32 Terms
What are the SI Units for Length, Weight, and Time?
Meter, Kilogram, and Second
What are the CGS Units for Length, Weight, and Time?
Centimeter, Gram, and Second
What are the BES Units for Length, Weight, and Time?
Foot, Slug, and Second
What does the mass of an object indicate?
The tendency of the object to continue in motion with a constant velocity
What is the symbol and factor of giga?
G, 10^9
What is the symbol and factor of mega?
M, 10^6
What is the symbol and factor of kilo?
k, 10³
What is the symbol and factor of deci?
d, 10^-1
What is the symbol and factor of centi?
c, 10^-2
What is the symbol and factor of milli?
m, 10^-3
What is the symbol and factor of micro?
μ, 10^-6
How many ft is 1m?
3.3
How many cm is 1in?
2.43
How many km is 1mi?
1.61
How many cm is 1m?
100
How many ft is 1 mile?
528
How many lbs is 1kg?
2.2
How many oz is 1lb?
16
How many lbs is 1 ton?
2,000 lbs
How many kgs is 1 metric ton?
1000
How many liters is 1 gallon?
3.785
How many quarts is 1 gallon?
4
How many pints is 1 qt?
2
What is a scalar quantity?
A quantity that can be described with a single number giving its size or magnitude (volume, time, temperature, etc.)
What is a vector quantity?
A quantity that deals with both magnitude and direction (represented by arrows that give the direction and are proportional to the vector
What does a newton (N) represent?
The magnitude of a force
What happens when a vector is multiplied by -1?
The magnitude remains the same, but the direction is reversed
What is a unit vector?
A vector with a magnitude of 1, but no dimensions (identified with ^ symbol and always point in + direction)
What are scalar components?
Positive or negative numbers that have a magnitude equal to that of vector component x (and are given a positive sign if vector component x points along the +x axis and a negative sign if vector component x points along the -y axis)
For a vector to be zero, every vector component must individually be zero. True or False?
True
What do you need to find the components of a vector?
Magnitude and direction
Two vectors are equal if they have the same magnitude and point in the same or exact opposite directions. True or false?
False. Two vectors are equal only if they have the same magnitude AND direction