Physics December Final
Terms
undefined, object
copy deck
- 1st in Scientific Reasoning
- purpose or question
- 2nd in Scientific Reasoning
- form a hypothesis
- 3rd in Scientific Reasoning
- identify variables
- 4th in Scientific Reasoning
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design a procedure
-materials and instruments
-how data is collected
-collection of data - 5th in Scientific Reasoning
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Analysis and evaluation of data
-average data if necessary
-graph if appropriate
-transform graph if necessary
-produce mathematical model - 6th in Scientific Reasoning
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Conclusion
-mathematical model
-importance of numerical results
-statement of relationship b/w variables -
Position time graph is linear
acceleration... - acceleration = 0
- equation of motion
- x= vt + x-not
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explaination of uniform motion
time vs. position - position changes uniformly with time; position and time are proportional
- slope or average velocity in uniform motion
- delta x over delta t
- the motion map for uniform motion is...
- objects position changes uniformly; positions at regular time intervals are evenly spaced
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motion map of a fast car vs a slow car
why? -
fast car: dots are farther apart
slow car: dots are closer together
why? the fast car travels more distance at each time interval than the slow car - general form of the equation of a line:
- y=mx+b
- transforming data: Upward opening parabola
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square values of the independent variable
y=mx^2+b -
y=mx^2+b shows:
y...
m... -
-m is the slope of the transformed graph and proportionality constant of original curve
-y is proportional to the square of x - Transforming data: Sideways opening parabola
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square values of dependent variable
y^2=mx+b - y^2=mx+b shows...
- square of y is proportional to the x
- Transforming curve: curve part faces both the x and y axis
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inverse curve: plot invers values of x variable:
y=m*1/x - Def. of Instananeous velocity
- is the velocity an object has at any given instant.
- best way to find instant. velocity
- find the average velocity for a very short distance and time interval
- describe the graph of time vs. velocity
- some objects change with velocity proportional to time
- mathematical model for time vs. velocity
- v=at+v-not
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average acceleration
of time vs. velocity (slope) - a= delta v over delta t
- time vs. velocity and position vs. time
- when plotting the same data of time vs. velocity, for position vs. time, the result will be a curve (upward opening)
- position vs. time graph
- position is proportional to the square of time
- equation of position vs. time
- x=1/2at^2 or x=v-not *t +1/2at^2
- interpretation of position vs. time graph of non-uniform motion
- position of the object changes faster than time changes
- motion map of position vs. time graph
- start closer together than get farther apart
- relation between velocity vs. position
- v^2=2ax +v-not^2