# Physics Ch1 of The Physics of Everyday Phenomena

## Terms

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Avg speed
Rate at which distance is covered over time

How fast you are going, not where
Instanteous Speed
How fats one is going at a given instant (choose very small interval)
Velocity
Direction of motion and how fast

Has magnitude (size-fast) and direction
Vector
A quantity that has both magnitude and direction

Length of arrow=vector quantity

arrow=direction
Vector Quantity
Any quantity for which both size and direction are needed for a complete description

IE:velocity, acceleration, force, moment
Instanteous Velocity
Vector Quantity.

Size equal to instanteous speed and the direction that corresponds to the object's motion
Acceleration
The rate at which velocity changes
Avg. Acceleration
Change in velocity over the time to make that change
Instanteous accelration
Rate at which velocity is changing at a given instant of time
Uniform Accelratijon
Acceleration that does not change as motion proceeds
Slope of a PvT graph
Velocity
Slope of a VvT graph
Acceleration
Slope of a Unifrom Acceleration Graph
Horizontal Line
Slope of a Distance v Time curve
Instanteous/velocity
Slope of DvT:Large upward slope:
Large instanteous velocity
Slope of DvT=constant
velcoity=constant
Steep slope of VvT=
Rapid change in V, large acceleration
Horizontal line for slope of VvT
Zero Acceleration
Uniform Acceleration in a VvT
Constant slope (upward if positive, vice versa)
Area under an Acceleration v T
Change in Velocity
Area aunder a VvT graph
Change in posititon/distance traveled?
Eqn for Avg Speed
Distance traveld/time of travel

s=d/t
Eqn for avg. Acceleration
Change in V/elapsed time

a=change in v/t
Eqn for distance
Velocity times time(with constant v)

x=vt
Getting V from a Uniform Acceleration Grpah
V at any time=original v +velcoity fained.

Velocity is gained b/c of acceleration

Change in V=at

V=Vo+at
Finding D in V graph with nonconstant V and initial v=0
x=(.5)at^2

t goe sin twice to find avg v and to find distance
Avg velocity (if start is 0)
1/2 final v
final V
at
Finding D in V graph with motion before acceleration
D=VoT+(.5)at^2

same equation just accounts for intial velocity times time (distance it moves with contant v)

sum of rectange and trainfe
finding a in an AvT graph
A=constnat
Avg V
Total change in psotition/elapsed time

delta x (with vector)/delta t
Finding position from a velocity v time graph
x=(.5)AT^2+VoT+Xo

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