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Physics Midterm (ch1-6)
kinematics.
32
Physics
11th Grade
09/30/2010

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Term
no displacement equation
Definition
Vf=Vi+at
Term
no final velocity equation
Definition
Df=Di+Vit+1/2at2
Term
no acceleration equation
Definition
Df=Di+(Vi+Vf/2)t
Term
no time equation
Definition
Vf2=Vi2+2a(Df-Di)
Term
no initial velocity equation
Definition
Df=Di+Vft-1/2at2
Term
Acceleration of Gravity
Definition
-9.8m/s2
Term
initial v, final v, initial d, final d, acceleration, time
Definition
Vi(Vo) , Vf, Di(Do), Df, a, t
Term
average acceleration
Definition
a=ΔV/Δt
Term
average velocity
Definition
v=ΔD(displacement)/Δt
Term
average speed
Definition
distance/Δt
Term
SI units (mass, time, length,)
Definition
kg, s, m
Term
Magnitude ---> Components
Definition
X: Mcos(), Y: Msin()
Term
Components ---> Magnitude
Definition
pythag. theory
Term
Components ---> Angle
Definition
tan-1 (Vy/Vx)
Term
current
Definition
Vws
Term
attempted route (where you headed)
Definition
Vbw
Term
where the boat actually wound up going
Definition
Vbs
Term
Vbw +V ws
Definition
V bs
Term
horizonal projectile motion
Definition
Vxi = Vx, Δx = vxi(t)
Term
vertical projectile motion
Definition
vy = vyi - gt, Δy = Vyi(t) - 1/2 g t^2
Term
Newton's first law
Definition
object at rest will stay at rest, object in motion will stay in motion (innertia / mass)
Term
Newton's second law
Definition
F = ma
Term
Newton's third law
Definition
all forces have an equal and opposite force (between 2 objects, not N and mg!)
Term
inclined plane weights
Definition
Wx = mgsin(), Wy = -mgcos()
Term
Newton's law of universal gravitation
Definition
F=G(m1m2/r^2)
Term
how to find g
Definition
g=G(m1(big)/r^2)
Term
Kepler's first law
Definition
planets move in elliptical orbits around the sun
Term
Kepler's second law
Definition
planets go faster when theyre closer (same area in same time)
Term
Kepler's third law
Definition
(time of a year)^2 = (distance to sun)^3
Term
perihelion/aphelion
Definition
closest/farthest from sun
Term
orbital velocity (v= little dude orbiting, M= mass of big dude)
Definition
v = sq.root(GM/r)
Term
Kepler's third law equation
Definition
(GMsun/4π^2)T^2 = r^3
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