Title: Theory / Unimportant / Experimental / Physics / Halliday, Resnick, Walker / Measure

Question: What are the goal of time measure
Answer: Measuring a duration
Page: 5
Chapter: 1
Section: 2
Context: Physics
Answer2: specifying a time

Question: Why do we use atomic mass units instead of kg
Answer: Because it's easier to compare measure of weight of atoms to the weight of carbon atom than to kg definition. Thus there is a greater precision in atomic
Page: 7
Chapter: 1
Section: 2
Answer2: specifying when an event occurred

Name: Atomic mass unit
Chapter: 1
Page: 7
Represents: 1/12 of the weight of a carbon-12 atom
Section: 2
Etymology: Related to the mass of an atom
Denoted by: u

Name: Kinematics
Definition: The classification and comparison of motions
Page: 14
Chapter: 2

Name: origin
Definition: An arbitrary fixed point in a system
Page: 14
Chapter: 2
Context: Physics,
Name2: zero point

Name: A displacement  of \(x\)
Definition: A change in position of \(x\)
Page: 14
Chapter: 2
Variables: \(x\) a particle
Context: Physics - mechanics

Name: A particle
Definition: A point-like object
Page: 14
Chapter: 2
Context: Mechanics
Example: Electron

Name: the magnitude of \(m\)
Definition: The absolute value of the measure of \(m\)
Page: 14
Chapter: 2
Variables: \(m\) a measure
Context: Mechanics

Name: the sign of \(m\)
Definition: Whether the measure of \(m\) is positive, null or negative
Page: 14
Chapter: 2
Variables: \(m\) a measure
Context: Mechanics

Name: The average velocity of \(x\)
Definition: \(\frac{x_2-x_1}{t_2-t_1}\)
Page: 16
Chapter: 2
Variables: \(x\) a position measure over time
\(t_1,t_2\) time stamps
Context: Mechanics
Notation: \(\nu_{\mathtt{avg}}\)
Representation: Slope on the graph of position over time

Name: The velocity of \(x\)
Definition: \[\lim_{\Delta t\to 0}\frac{\Delta x}{\Delta t}\]
Page: 16
Chapter: 2
Variables: \(x\) a position measure over time
\(t\) time stamp
Context: Mechanics
Notation: \(\nu\)
Name2: The instantaneous velocity

Name: The acceeleration of \(x\)
Definition: \[\frac{dv}{dt}}\]
Page: 20
Chapter: 2
Variables: \(x\) a position measure over time
\(t\) time stamp
Context: Mechanics
Notation: \[\frac{d^2x}{dt^2}\]
Denoted by: \(a\)

Name: The free-fall acceleration
Definition: The acceleration of an object falling, assuming only gravity has an impact
Page: 27
Chapter: 2
Section: 4
Context: Mechanics

Name: A scalar
Definition: A physical quantity without direction
Page: 41
Chapter: 3
Section: 1
Context: Mechanics

Name: A vector
Definition: A pair with a magnitude and a direction
Page: 41
Chapter: 3
Section: 1
Context: Mechanics

Name: A displacementvector
Definition: A vector representing a displacement
Page: 41
Chapter: 3
Section: 1
Context: Mechanics

Name: An acceleration vector
Definition: A vector representing an acceleration
Page: 41
Chapter: 3
Section: 1
Context: Mechanics

Question: Restriction on vector addition/substraction
Answer: We can only add vectors of same type. E.g. displacement and displacement
Page: 41
Chapter: 3
Section: 1
Context: Mechanics

Name: Resolving a vector
Definition: Finding the components of a vector
Page: 43
Chapter: 3
Section: 1
Context: Mechanics

Name: A unit vector
Definition: A vector of magnitude 1
Page: 46
Chapter: 3
Section: 2
Context: Mechanics

Name: The unit vector in the direction \(x\)
Page: 46
Chapter: 3
Section: 2
Context: Mechanics
Notation: [$]\hat i[/$]

Name: The unit vector in the direction \(y\)
Page: 46
Chapter: 3
Section: 2
Context: Mechanics
Notation: [$]\hat j[/$]

Name: The unit vector in the direction \(z\)
Page: 46
Chapter: 3
Section: 2
Context: Mechanics
Notation: [$]\hat k[/$]

Name: The right hand coordinate system
Page: 46
Chapter: 3
Section: 2
Context: Mechanics