Glossary of MCAT Physics 2
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 What is a unit?
 A welldefined quantity with which other quantities are compared in a measurement.
 What are the two different types of units?
 1. Derived  those made in terms of other units. 2. Standard  those which are compared to a standard.
 What are the three SI units for mechanics?
 1. meter 2. kilogram 3. second
 Kilo?
 10^3
 Mega?
 10^6
 Centi?
 10^2
 Milli?
 10^3
 Micro?
 10^6
 Nano?
 10^9
 Pico?
 10^12
 What are the components of a vector?
 The projection of a vector on a Cartesian (x,y) coordinate system.
 How do you resolve a vector to Cartesian xcoordinates?

This formula
 When resolving components, how are the x and y components arranged?
 Head to tail.
 How do determine the magnitude of a vector from Cartesian coordinates?

This formula
 How do you determine the direction of a vector from Cartesian coordinates?

This formula
 When adding vectors geometrically, how are they arranged?
 Head to tail.
 What happens when you put a negative sign on a vector?
 It maintains its magnitude but changes its direction by 180 degrees.
 How do you add vectors algebraically?
 1. Resolve vector into x and y components. 2. Add xcomponents and ycomponents together. 3. Convert to magnitudedirection if necessary.
 What is average velocity?

Picture.
 What is average speed?

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 What is instantaneous velocity?

Picture.
 What is instantaneous speed?
 Speed is velocity without direction, It is the scalar component [magnitude] of velocity.
 What is average acceleration?

Picture.
 What is instantaneous acceleration?

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 What is the relationship between acceleration and displacement?

Picture.
 What are the derived equations for constant acceleration?

Picture.