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15 Cards in this Set
- Front
- Back
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physics includes which 2 categories
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classical physics
modern physics |
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classical physics includes what 3 branches?
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classical mechanics
thermodynamics electricity & magnetism |
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modern physics includes what 2 branches?
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relativity
quantum mechanics |
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Physical quantities need what in order to be clarified?
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-Number
-Units -Uncertainty (that's the +/- referred to by saying "I'm 30 years old...so that clarifies that I could be about to turn 31, or I could have just turned 30) |
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3 basic types of quantities
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1. Length, L - SI unit of Meter (m)
2. mass, M - SI unit of kilogr (kg) 3. Time, T - SI unit of second (s) |
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Length's SI unit is what?
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meter, m
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Mass' SI unit is what?
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kilogram, kg
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Time's SI unit is what?
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second, s
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In physics, mechanics is broken into 2 categories which are what?
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1. Kinematics
2. Dynamics |
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Kinematics refers to what?
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Mathematical description of motion
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Dynamics refers to what?
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causes of motion
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There are 3 types of motion which are what?
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1. Translational -one place to next
2. Rotational -rotating 3. Vibrational -oscillating |
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When we're talking about translational motion, what are we talking about?
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We're talking about position...
for example Position X(t) (position is a function of time...so we want to know where you are at a given time) In general we treat everything like it's a point |
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Average speed equals what?
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total dist/time (is positive)
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average velocity equals what?
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displacement/time (can be negative)
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