## Glossary of Physics December Final

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- 1st in Scientific Reasoning
- purpose or question

- 2nd in Scientific Reasoning
- form a hypothesis

- 3rd in Scientific Reasoning
- identify variables

- 4th in Scientific Reasoning
- design a procedure

-materials and instruments

-how data is collected

-collection of data

- 5th in Scientific Reasoning
- Analysis and evaluation of data

-average data if necessary

-graph if appropriate

-transform graph if necessary

-produce mathematical model

- 6th in Scientific Reasoning
- 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

- 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

- 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
- 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
- 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
- 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

- 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