MCAT Physics 2
Terms
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- What is a unit?
- A well-defined 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 x-coordinates?
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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?
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This formula - How do you determine the direction of a vector from Cartesian coordinates?
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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 x-components and y-components together. 3. Convert to magnitude-direction if necessary.
- What is average velocity?
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Picture. - What is average speed?
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Picture. - What is instantaneous velocity?
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Picture. - What is instantaneous speed?
- Speed is velocity without direction, It is the scalar component [magnitude] of velocity.
- What is average acceleration?
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Picture. - What is instantaneous acceleration?
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Picture. - What is the relationship between acceleration and displacement?
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Picture. - What are the derived equations for constant acceleration?
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Picture.