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AP Physics 1
Physics 1 test
81
Physics
12th Grade
04/05/2016
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Term
Equation
 Definition
A mathematical expression containing two parts, one on either side of the equals sign.
Term
Formula
 Definition
An equation used for the purpose of deriving a certain value or solving some practical problem.
Term
Vector
 Definition
A special type of quantity in which there are two components:magnitude and direction.
Term
Coefficients
 Definition
A specific number.
Term
Constant
 Definition
A specific quantity represented by a letter of the alphabet.
Term
Varible
 Definition
An expression that stands for numbers but are not specific
Term
The constant "c" stands for what, and how much?
 Definition
It stands for the speed of light and has the value of 299, 792, 000 meters per second.
Term
Speed is most often given in ____ per ____, because distance is in ____ and time is in ____.
 Definition
Meters per second, Meters, seconds
Term
What is the common name for a "one-variable second-order equation"?
 Definition
A quadratic equation.
Term
What is the proper form for the qudratic equation?
 Definition
a(x^2) + bx + c = 0
Term
Vectors are commonly used in physics to represent what three things?
 Definition
Force, velocity and acceleration.
Term
What is a scalar?
 Definition
A real number.
Term
A number line is ____ ____ and they only have ____.
 Definition
one dimentional... magnitude.
Term
What are some examples of what scalars can be used for?
 Definition
Time, Temperature, Mass...
Term
How do you find the sum of two vectos geometrically?
 Definition
You construct a parallelogram with a and b as adjacent sides; then a+b is the diagonal of this parallelogram.
Term
V and Δ x and t
 Definition
V= Δ x / t
Term
a and Δ v and t
 Definition
a= Δ v / t
Term
Fnet = ma
 Definition
Fnet = ma
Term
x = xo + vo + 1/2at^2
 Definition
x = xo + vo + 1/2at^2
Term
v = vo + at
 Definition
v = vo + at
Term
vf 2 = vo 2 + 2a Δ x
 Definition
vf 2 = vo 2 + 2a Δ x
Term
x = v t = [ (v + vo)/2 ] t
 Definition
x = v t = [ (v + vo)/2 ] t
Term
Ff = μ Fn
 Definition
Ff = μ Fn
Term
Fs = k x
 Definition
Fs = k x
Term
a = Fnet / m or dv/dt = Fnet / m
 Definition
a = Fnet / m or dv/dt = Fnet / m
Term
w = Fd cos θ = F ∙ x
 Definition
w = Fd cos θ = F ∙ x
Term
w = area under F- x curve
 Definition
w = area under F- x curve
Term
Pavg = w / t
 Definition
Pavg = w / t
Term
P = F v cos θ
 Definition
P = F v cos θ
Term
k = ½ mv 2
 Definition
k = ½ mv 2
Term
Ug = mgh
 Definition
Ug = mgh
Term
Us = ½ k x
 Definition
Us = ½ k x
Term
∆ k = w
 Definition
∆ k = w
Term
∆ u = w
 Definition
∆ u = w
Term
Energy i = Energy f
 Definition
Energy i = Energy f
Term
Xcm = (X1m1 + X2m2 + …) / (m1+m2+…)
 Definition
Xcm = (X1m1 + X2m2 + …) / (m1+m2+…)
Term
p = mv
 Definition
p = mv
Term
J =∆p
 Definition
J =∆p
Term
J = Favg t
 Definition
J = Favg t
Term
J = area under F-t curve
 Definition
J = area under F-t curve
Term
τ = rFsinθ
 Definition
τ = rFsinθ
Term
α = τ net / I
 Definition
α = τ net / I
Term
Vector
 Definition
Something that has magnitude (a number) and direction.
Term
Scalar
 Definition
Has a magnitude (number) only.
Term
Position
 Definition
Separation between an object and a referency point.
Term
Instantaneous Velocity
 Definition
velocity (or speed) at that instant of time, or, it can be defined as the average velocity (or speed) over an infinitesimally short time interval (average speed and velocity are always the same value)
Term
Distance/Displacement formula:
 Definition
d=vt
Term
SI unit for speed or velocity:
 Definition
m/s
Term
Acceleration due to gravity:
 Definition
9.8 m/s2
Term
Acceleration formula:
 Definition
a =
Vf-Vi
t
Term
Formula for final velocity:
 Definition
Vf=vit
Term
Distance formula with acceleration:
 Definition
d=vit+(1/2)at2
Term
Formula for final velocity squared:
 Definition
Vf2 = Vi2+2ad
Term
Inertia
 Definition
a measure of how an object resists changes in motion; it is a measure of an object’s mass
Term
Newton's first law:
 Definition
An object in motion/at rest will remain in motion/at rest unless acted on by an outside force.
Term
Newton's second law:
 Definition
an unbalanced force (or net force, S) causes an object to accelerate; this acceleration is directly proportional to the unbalanced force and inversely proportional to the object’s mass; called the law of acceleration

a = SF / m or S F = m a
Term
Newton's third law:
 Definition
When one object exerts a force on another object, the second object exerts a force on the first object that is equal in magnitude, but opposite in direction; for every action, there is an equal, but opposite reaction; called the law of action-reaction
Term
Universal gravitational constant:
 Definition
G = 6.67 x 10-11 N m2/kg2
Term
Formula for the force of weight:
 Definition
Fw = mg
Term
Formula for the force of friction:
 Definition
Ff=μFn
Term
Formula for force:
 Definition
F=ma
Term
Force of gravity:
 Definition
FG=
Gm1m2 d2
Term
Formula for parallel force:
 Definition
Fp=Fwsinϑ
Term
Formula for normal force:
 Definition
Fp=Fwcosϑ
Term
Formula for centripetal force:
 Definition
Fc=
mv2
r
Term
Formula for vertical velocity:
 Definition
Vv=vsinϑ
Term
Formula for horizontal velocity:
 Definition
Vh=vcosϑ
Term
The formula for a period:
 Definition
[image]
Term
The formula for frequency:
 Definition
ƒ = 1/T
Term
The formula for centripetal acceleration:
 Definition
[image]
Term
Amplitude
 Definition
the distance from the equilibrium point to the point of greatest displacement
Term
Momentum, definition and formula:
 Definition
a measure of how hard it is to stop a moving object; it is the product of the object's mass and its velocity; since velocity is a vector, momentum is a vector quantity; symbol is p and SI unit are kg m/sec. The direction of the momentum is the same as that of the velocity.

p= m v
Term
Net force in relation to momentum:
 Definition
ΣF = Δp / Δt
Term
Definition and formula for impulse:
 Definition
a force exerted over a time interval; symbol is J and SI unit is N sec
J = F t
Term
Impulse in relation to average force, mass and momentum.
 Definition
J = F t = m Δv = Δp
Term
Law of Conservation of Momentum:
 Definition
the momentum of a closed, isolated system is constant; the sum of the initial momentum of the objects is equal to the sum of the final momentum of the objects Σpi = Σpf
Term
Formula for work:
 Definition
W = Fd
Term
Formulas for work input, work output and efficiency in relation to work:
 Definition
Wi = Fappdapp

Wo = Fwh

eff= Wo/Wi
Term
Kinetic and Potential Energy formulas:
 Definition
KE = (1/2)mv2

PE = mgh
Term
Ideal mechanical advantage, mechanical advantage and efficiency in relation to mechanical advantage:
 Definition
IMA = d / h

MA = Fw/Fapp

eff=MA/IMA
Term
SI Unit of Power
 Definition
Watts
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