Lenses and Mirrors
1/So + 1/Si = 1/f
Hi/Ho = Si/So
So - Distance from Object to Lens or Mirror
Si - Distance from Image to Lens or Mirror
Ho - Height of the Object
Hi - Height of the Image
f - focal length
Do not forget anything. It will all be back.
We will be going past Vectors.
But they will keep following us.
LOOK at the Test on Units, you should all know this information.
Kinematics
S = So + VoT + 0.5ATT
V = Vo + AT
S = Position at time "T" So = Position at time ZERO
V = Velocity at time "T" Vo = Velocity at time ZERO
A = Acceleration (MUST BE CONSTANT)
T = time since the start (start time is ZERO)
F = MA
F = Force M = Mass
A = Acceleration (MUST BE CONSTANT)
Work and energy
Kinetic Energy Ek = .5mVV (one half Mass times velocity squared)
Gravitational Energy Eg = mgh (On earth g = 9.81 bu twe use 10)
h = Height
Work W = FScosA F = force S = Distance A = Angle between them
Momentum = Mass times Velocity ( it is a vector )
In any closed system, momentum is conserved.
Impulse = Force times Time
Impulse = change in Momentum for any object
