Physics in the News
Due Date: 10/3/11
You may be or may be not surprised to find that yes, physics is everywhere and even makes a
frequent appearance on the nightly news. For example, stories around the cause of the US
Airways plane crash in th
Chapter 2 Linear Motion
2.1 Motion Is Relative
1. Define rate:
2. define relative:
3. Define speed:
4. List several units of speed:
5. Define instantaneous speed:
6. Define average speed:
7. A speedometer in a car gives average or instanta
Projectile Motion Pre-Lab Part 1: Track only
Purpose: The first part of the Projectile Lab is an investigation into horizontal projectile motion. The
projectile is launched from the top of the table horizontally, with no initial angle. We will ignore any
Kinematics (Motion) in One Dimension
Displacement a magnitude that equals the shortest
distance between the two positions.
d = d f - d i
Average Speed = distance traveled by the time
required to cover the distance:
Ave Speed = distance / time elapsed
1. Notes on Gravity
2. Gravity packet
Ch 12 #1-14
Universal Laws of Gravitation
Early Ideas about planets/stars
o Geocentric universe
o Stars fixed in space
o Motion of planets natural/divine
Machines and Efficiency
Machine a device that helps do work by
changing the magnitude or direction of the
o Levers, pulleys, inclined planes
In ideal situations, without friction:
o Findin = Foutdout
Actual Mechanical Advantage (AMA) ratio
Momentum, Impulse, and Conservation of
Momentum = inertia in motion
o Momentum (P or mom) = mass x velocity
o Units = kg * m/s
Impulse = change in momentum
o Impulse = force x time interval
o A force sustained over a period of time
will affect th
Work, Energy, Power, KE, PE, Conservation of
Work a way of transferring energy from one
system to another depends on a force applied
over a distance:
Work = Fd = Joules
For maximum work to be done, the
object must move in the direction of
Ch 4 Newtons First Law Law of Inertia
Force a push or pull on an object.
o Force is a vector it has both magnitude
o The unit of force is the Newton (N).
o Since forces are vectors, they are made
up of X and Y components, and adhere
Ch 5 Newtons Second Law Force and
Net Force causes acceleration
Remember acceleration is a change in
velocity over a time interval
Mass or an objects inertia resists
Newton developed a relationship
between mass, acceleration
Ch 6 Newtons Third Law Action/Reaction
When one object exerts a force on a
second object, the second object exerts an
equal and opposite force on the first object.
Its arbitrary as to which force is the action
force and which one is the reaction force.
Coulombs Law Practice Problems
1. Sphere A, with a charge of +6.0C ( = 10-6), is located near another charged sphere, B. Sphere B
has a charge of -3.0C and is located 4 cm to the right of A on the +x axis.
a. What is the force of sphere B on sphere
Energy and Phase Changes
In order to change the phase of a substance
i.e. melt, vaporize, or solidify it the substance
must be heated or cooled and energy is added
or given off.
When a substance moves from the solid to
liquid to gas state, the substanc
Thermodynamics Ch 24
Thermodynamics the study of heat and its
transformation into mechanical energy.
Provides the basic theory behind heat engines
steam turbines to fusion reactors, and heat
pumps refrigerators, a/c units, etc.
First Law of Thermodynam
Specific Heat Ch 21
Heat The energy that transfers from one
object to another because of a temperature
difference between them.
Temperature the quantity that tells how hot or
cold something is compared to a standard.
Specific Heat Capacity the capacity of
Ch 32 & 33 Guided Reading
Ch 32.1 Electrical Forces and Charge
1. Define electrostatics.
2. Define electrical forces.
3. What is the fundamental rule for all electrical phenomena?
Ch 32.2 Conservation of Charge
1. Describe the principal of conservat
Force of Fluids
1. Develop a procedure to determine the density of your piece of clay. Perform the
procedure, record the data and calculate the density of your clay.
2. Next, design a boat with your clay that will carry the maximum number of
pennies and s
Object: To determine the initial velocity of a projectile from range and height of fall data.
Materials: Track, carbon paper, meter stick, clamps, balls, Marble Launcher, watch, tape measure
1. Set up the track so the meta
Accelerated Motion on the Air Track
Object: To observe accelerated motion of an object. Acceleration is the rate of change of the velocity of a
moving object. An object moving down an incline has an acceleration a = gsin, where g is the acceleration