MCAT - Physics/Math - 1: Kinematics And Dynamics |
MCAT - Physics/Math - 1: Kinematics and Dynamics |
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MCAT - Physics/Math - 1: Kinematics and Dynamics || with Complete Solutions.
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MCAT - Physics/Math - 1: Kinematics and Dynamics |
Institution
MCAT - Physics/Math - 1: Kinematics And Dynamics |
What are the measures in the Imperial system (Hint *FPS) correct answers Foot, pound, seconds
What is the Imperial unit for mass (not weight) correct answers slug
What are the units in the metric system (hint* MKS, or CGS) correct answers meters, kilograms, and seconds, or centimeters, grams,...
MCAT - Physics/Math - 1: Kinematics and Dynamics |
MCAT - Physics/Math - 1: Kinematics and Dynamics |
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MCAT - Physics/Math - 1: Kinematics and Dynamics || with
Complete Solutions.
What are the measures in the Imperial system (Hint *FPS) correct answers Foot, pound, seconds
What is the Imperial unit for mass (not weight) correct answers slug
What are the units in the metric system (hint* MKS, or CGS) correct answers meters, kilograms,
and seconds, or centimeters, grams, and seconds
What do SI units include? correct answers the MKS system as well as:
1. ampere (A)(unit) - Current (quantity)
2. mole (mol)(unit) - Amount of substance (quanity)
3. kelvin (K)(unit) - temperature (quantity)
4. candela (cd)(unit) - luminous intensity (quantity)
What are base units? correct answers the standard units around which the system itself is
designed
what are derived units? correct answers as the name implies, associating base units with each
other
e.g., the newton (unit of force) is derived from kilograms, meters, and seconds (1 N = 1 kgm/s^2)
Angstroms, nanometers, or electron-volts are different units that are easier to work where?
correct answers at the subatomic level
Angstroms correct answers 1 A = 10^-10m)
Nanometers correct answers 1 nm = 10^-9m)
electron-volts correct answers energy on the atomic scale
1 eV = 1.6 X 10^-19J
Concept check 1.1 #1 - if the newton is the product of kilograms and meters/second^2, what
units comprise the pound? correct answers Force (N) obeys the same relationship with mass and
acceleration regardless of unit system
Force is ALWAYS product of MASS (kg) and ACCELERATION (m/s^2) - so 1 pound =
slug*ft/s^2
, Concept check 1.1 #2 - Order the following units from smallest to largest: centimeter, angstrom,
inch, mile, foot correct answers angstrom (because its coloum/s - its a unit within a second),
centimeter, inch, foot, mile
vectors correct answers numbers that have magnitude and direction
vector quantities inlcude:
-displacement, velocity, acceleration, and force
Scalars correct answers numbers that have magnitude only and no direction
scalar quantities include distance, speed, energy, pressure, and mass
Example of discerning vector and scalar measurements: in 1 year the earth travels 940 million
km correct answers vector - the displacement is zero km because the earth came back to original
position
scalar - 940 million km because that was its total distance in a year
Common notations for a vector quantity are what correct answers either an arrow or a boldface
(eg., A)
the magnitude of the displacement between two positions can be represented as an arrow or A.
common notations for a scalar quantity correct answers usually represented with italic type: so
the distance between 2 points could be d(italicized)
resultant correct answers the sum or difference of two or more vectors
how can you find the sum or resultant of two vectors (A and B)? correct answers place the tip of
A with the tail of B without changing either the length or the direction of either arrow.
called the tip-to-tail method
the tip-to-tail-method correct answers the lenghts of the arrows must be proportional to the
magnitudes of the vectors
vector sum of A + B is the vector joining the tail of A and the tip of B
Always add tip to tail!!
splitting the vector into components method correct answers break the vectors into perpendicular
components
Given vector V, you can find the x and y components by drawing a right triangle with V as the
hypotenuse
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