Chapter 1- Kinematics
Regents Physics
Intro to Kinematics
Kinematics is the mathematical treatment of the motions of bodies without regard to the forces
that produce the motion.
Scalar Quantities vs. Vector Quantities
A scalar quantity has magnitude but n
Chapter 1- Kinematics
Regents Physics
One-Dimensional Motion
1. DISTANCE
Distance is the total length of a path that an object travels. Distance is a scalar quantity which
means it only has magnitude. Therefore, if a problem tells you direction and asks f
Chapter 1- Kinematics
Regents Physics
One-Dimensional Motion - Speed vs. Velocity
1. SPEED
An object is considered moving when its
position changes with time. The speed of an
object is the distance the object moves per unit
of time. Since we are talking a
Chapter 1- Kinematics
Regents Physics
One-Dimensional Motion Acceleration
The time rate of change of velocity is acceleration. Acceleration is a vector quantity and is
defined as the change of velocity per unit of time. The equation is:
Since velocitys
Th
Chapter 1- Kinematics
Regents Physics
One-Dimensional Motion Constant Acceleration Equations
As we already know, acceleration is defined as the change of velocity per unit of time and can be
found using:
Since: vf - vi, our formula then becomes:
If we app
Chapter 3- Free Fall
Physics
Regents
One-Dimensional Motion Freely Falling Objects
Since we have already talked about
to gravity. Gravity is the force
the vicinity of
matter, all
acceleration, we may now focus on the acceleration due
between the mass of E
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Regents Physics
Objects Thrown Upward
Rather than an object dropped or thrown downward, some situations involve objects
being thrown straight up into the air. The important thing to remember is that these
objects are still considered in free fall a
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Chapter 4 Vectors
Regents Physics
Drawing & Adding Vectors
Recall that vector quantities are quantities that have
both magnitude and direction (i.e. displacement,
velocity, acceleration, force, etc.) When drawing or
interpreting a vector, the Regen
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Chapter 4 Vectors
Regents Physics
Vectors and Trigonometry
One of the most common cases of concurrent forces are
those acting at right angles to each other. For these,
simply use the Pythagorean Theorem to find the resultant
vector. A picture will
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Chapter 5- Forces
Regents Physics
Newtons Three Laws of Motion
Newtons First Law (Law of Inertia)
Objects at rest will remain at rest unless acted upon by
an unbalanced force. Objects in motion will remain in
motion unless acted by an unbalanced fo
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Chapter 5- Forces
Regents Physics
Equilibrium (Fnet = 0)
As we already know, the vector sum of the concurrent forces
acting on an object is called the net force, Fnet. However, if the
net force acting on an object is zero, the object is in
equilibr
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Chapter 5- Forces
Regents Physics
Friction
The force that opposes the relative
motion of two objects in contact is called
friction. Friction is a vector quantity and
is always parallel to the two surfaces in
contact. The force of friction (Ff) is
d
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Chapter 5- Forces
Regents Physics
Hookes Law (Spring Force)
Naturally, when a force is applied to a string,
the string either gets longer or shorter. The
compression or elongation of a spring is the
change in spring length from its equilibrium
posi
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Chapter 5- Forces
Regents Physics
Special Topics in Forces
1.) Elevators
There are four situations on an elevator that the
Regents wants you to know: at rest, moving with
constant velocity, accelerating upwards, and
accelerating downwards. In each
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Chapter 6- Gravitation
Regents Physics
Newtons Universal Law of Gravitation
According to Newtons universal law of gravitation, any two bodies of mass attract each other
with a force that is directly proportional to the product of their masses and i
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Regents Physics
Chapter 6- Circular Motion
Uniform Circular Motion
If a force has a constant magnitude and always acts perpendicular to the direction of the
velocity vector, the object moves in a circular path at constant speed, experiencing unifor
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Regents Physics
Chapter 7- Momentum
Momentum
The momentum (p) of an object is simply its mass multiplied by its velocity. Therefore, the
equation is:
p = mv
Mass (m) is in kilograms, velocity (v) is in meters per second, and momentum (p) is in kg.m
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Regents Physics
Chapter 7- Momentum
Impulse
Impulse (J), a vector quantity, is the change in
momentum. Impulse is a vector quantity and the
direction of the impulse is the same as the direction
of the change in momentum. The units for impulse
N.s.
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Regents Physics
Chapter 7- Momentum
Conservation of Momentum
Law of
Conservation of Momentum: the total momentum of the
objects in a closed system is constant.
(Note: a closed system is a group of objects not acted
upon by any external force)
will
Chapter 3 Two-Dimensional Motion
Regents Physics
Two-Dimensional Motion and Projectiles
We have observed objects moving in the horizontal direction
and the vertical direction. Now we will be analyzing objects
moving in both directions at the same time. Ho
Chapter 3 Two-Dimensional Motion
Regents Physics
Two-Dimensional Motion and Projectiles (Part Deux)
Type 2: Projectilce Fired at an Angle
Now that we have seen projectiles fired horizontally
from a height, we will now focus on projectiles fired
at an angl
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Regents Physics
Chapter 8- Work and Energy
Work and Power
Energy is the ability to do work. Energy is a scalar quantity.
When work is done on or by a system, the total energy of the
changed.
system is
Work
Work is the transfer of energy to an objec
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Regents Physics
Chapter 8- Work and Energy
Conservation of Energy
Law of Conservation of Energy: Energy cannot be created or destroyed.
Although the energy within a closed system may be transformed from one
type to another, the total energy (ET) of
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Regents Physics
Chapter 8- Work and Energy
Forms and Transfer of Energy
As already discussed, energy and work are closely related. When one system does work on
another system, the second system gains an amount of energy equal to the amount of work
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Regents Physics
Chapter 9- Electricity
Electrostatics
Electrostatics is the study of electric charges at rest. If there is no net transfer of charge,
charges are said to be at rest.
The smallest unit of an element is the atom. A typical atom
consis
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Regents Physics
Chapter 12 Waves
Introduction to Waves
A wave is a vibratory disturbance that propagates
through a medium (body of matter) or field. Every
wave has a particle vibrating or oscillating as its
source.
Waves transfer energy from one pl
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Regents Physics
Chapter 12 Waves
Periodic Wave Phenomena
Wave Fronts
A wave front is the locus of all adjacent points on a
wave that are in phase. For example, a dripping
faucet causes circular waves to spread from where the
drips strike the surfac
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Regents Physics
Chapter 11- Magnetism
Magnetism
A magnet is a material in which the spinning electrons of its
atoms are aligned with one another. This motion of
charges relative to each other produces a magnetic force.
Even if two magnets are at re
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Regents Physics
Chapter 13- Modern Physics
Wave-Particle Duality
As we know, light is a form of electromagnetic radiation that can
be represented as a wave propagated by an interchange of
energy between periodically varying electric and magnetic fi
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Regents Physics
Chapter 13- Modern Physics
The Nucleus and the Standard Model of Particle Physics
The Nucleus
Rutherfords experiments showed that all of the atoms positive
charge and nearly all of its mass is contained in the nucleus. The
nucleus i