• RED SLIDE: These are notes that are very
important and should be recorded in your
science journal.
Copyright © 2010 Ryan P. Murphy
-Nice neat notes that are legible and use indentations
when appropriate.
-Example of indent.
-Skip a line between topics
-Make visuals clear and well drawn. Please label.
Resistance Arm
Effort Arm
• RED SLIDE: These are notes that are very
important and should be recorded in your
science journal.
• BLACK SLIDE: Pay attention, follow
directions, complete projects as described
and answer required questions neatly.
Copyright © 2010 Ryan P. Murphy
• Keep an eye out for “The-Owl” and raise
your hand as soon as you see him.
– He will be hiding somewhere in the slideshow
Copyright © 2010 Ryan P. Murphy
• Keep an eye out for “The-Owl” and raise
your hand as soon as you see him.
– He will be hiding somewhere in the slideshow
“Hoot, Hoot”
“Good Luck!”
Copyright © 2010 Ryan P. Murphy
• Available worksheet, PE, KE, and ME.
• Available worksheet, PE, KE, and ME.
• Available worksheet, PE, KE, and ME.

Potential Energy: (PE) The energy stored
by an object as a result of its position.
Copyright © 2010 Ryan P. Murphy
Potential Enegy (PE)
Kinetic Energy (KE)
Potential Enegy (PE)
Kinetic Energy (KE)
Potential Enegy (PE)
Kinetic Energy (KE)

Potential Energy is the energy of position.
Objects that are elevated have a high
potential energy.
 Kinetic Energy is the energy of motion.
Copyright © 2010 Ryan P. Murphy

Potential Energy is the energy of position.
Objects that are elevated have a high
potential energy.
 Kinetic Energy is the energy of motion.
Copyright © 2010 Ryan P. Murphy

Potential Energy is the energy of position.
Objects that are elevated have a high
potential energy.
 Kinetic Energy is the energy of motion.
Copyright © 2010 Ryan P. Murphy
• Available worksheet, PE, KE, and ME.
Laws of Motion and Simple Machines Unit
Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy
• Video Link! (Optional) Energy changes,
Potential and Kinetic Energy.
– http://www.youtube.com/watch?v=Jnj8mc04r9E
• Activity! PE – KE Skateboarder Simulator
• Search Phet Skate Board Demo.
• Download program (Free)
http://phet.colorado.edu/en/simulation/energy
-skate-park
Copyright © 2010 Ryan P. Murphy

PE = mgh
Copyright © 2010 Ryan P. Murphy

PE = mgh
 PE
= Energy (in Joules)
Copyright © 2010 Ryan P. Murphy

PE = mgh
 PE
= Energy (in Joules)
 m = mass (in kilograms)
Copyright © 2010 Ryan P. Murphy
Laws of Motion and Simple Machines Unit
• Available worksheet, PE, KE, and ME.
• Calculate the potential energy for a 2 kg
basketball dropping from a height of 3.5
meters with a velocity of 9.8 m / sec².
– Find the PE in Joules? PE=mgh
Copyright © 2010 Ryan P. Murphy
• Calculate the potential energy for a 2 kg
basketball dropping from a height of 3.5
meters with a velocity of 9.8 m / s².
– Find the PE in Joules? PE=mgh
Copyright © 2010 Ryan P. Murphy
• Calculate the potential energy for a 2 kg
basketball dropping from a height of 3.5
meters with a velocity of 9.8 m / s².
– Find the PE in Joules? PE=mgh
Copyright © 2010 Ryan P. Murphy
• PE = mgh
m = 2 kg
g = 9.8 m/sec2
h = 3.5 m
Copyright © 2010 Ryan P. Murphy
• PE = mgh
m = 2 kg
g = 9.8 m/sec2
h = 3.5 m
Copyright © 2010 Ryan P. Murphy
• PE = mgh
m = 2 kg
g = 9.8 m/s²
h = 3.5 m
Copyright © 2010 Ryan P. Murphy
Newton's Laws of Motion, Forces in Motion and Simple Machines Unit
• Activity! Bungee Jumping!
• Activity! But we will use an egg.
Egg
• Activity! and It’s not a real egg, it’s plastic.
• Activity! …and instead of candy...
• Activity! …and instead of candy...it’s washers
Demonstration of bungee jump gone wrong
by teacher. This is not what you want to
happen to your plastic egg.
Paperclip to Hook on ceiling
Paperclip to Hook on ceiling
String (You create length)
Paperclip to Hook on ceiling
String (You create length)
Elastic
Laws of Motion and Simple Machines Unit

Kinetic energy
Copyright © 2010 Ryan P. Murphy

Kinetic energy
 The energy that matter has because of its
motion and mass.
Copyright © 2010 Ryan P. Murphy

Kinetic energy
 The energy that matter has because of its
motion and mass.
 Where m = mass of object (kg).
Copyright © 2010 Ryan P. Murphy

Kinetic energy
 The energy that matter has because of its
motion and mass.
 Where m = mass of object (kg).
 v = speed of object.
Copyright © 2010 Ryan P. Murphy

Kinetic energy
 The energy that matter has because of its
motion and mass.
 Where m = mass of object (kg).
 v = speed of object.
 KE = Energy in Joules.
Copyright © 2010 Ryan P. Murphy
• Kinetic energy
– The
energy shows
that matter
has kinetic
because
of its
This
equation
that the
energy
and
of motion
an object
is mass.
proportional to the square of
its
speed. m
For= amass
twofold
increase
– Where
of object
(kg).in speed,
the
energy
will increase by a factor of
– v kinetic
= speed
of object.
four.
– KE = Energy in Joules.
Copyright © 2010 Ryan P. Murphy
• Kinetic energy
– The
energy shows
that matter
has kinetic
because
of its
This
equation
that the
energy
and
of motion
an object
is mass.
proportional to the square of
its
speed. m
For= amass
twofold
increase
– Where
of object
(kg).in velocity,
the
energy
will increase by a factor of
– v kinetic
= speed
of object.
four.
– KE = Energy in Joules.
Copyright © 2010 Ryan P. Murphy

Kinetic energy
-
Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy
Kinetic Energy
Copyright © 2010 Ryan P. Murphy
Kinetic Energy
Copyright © 2010 Ryan P. Murphy

Translational Energy: Motion from one
location to another.

Vibrational energy (sound)

Electrical energy: Flow of electrons.
Copyright © 2010 Ryan P. Murphy

Rotational energy.
• Kinetic energy is a scalar quantity; as it does
not have a direction.
• Kinetic energy is a scalar quantity; as it does
not have a direction.
– Velocity, acceleration, force, and momentum, are
vectors. A quantity having direction as well as
magnitude
• Kinetic energy is a scalar quantity; as it does
not have a direction.
– Velocity, acceleration, force, and momentum, are
vectors. A quantity having direction as well as
magnitude
• Kinetic energy is a scalar quantity; as it does
not have a direction.
– Velocity, acceleration, force, and momentum, are
vectors. A quantity having direction as well as
magnitude
• Kinetic energy is a scalar quantity; as it does
not have a direction.
– Velocity, acceleration, force, and momentum, are
vectors. A quantity having direction as well as
magnitude
• Kinetic energy is a scalar quantity; as it does
not have a direction.
– Velocity, acceleration, force, and momentum, are
vectors. A quantity having direction as well as
magnitude
• Kinetic energy is a scalar quantity; as it does
not have a direction.
– Velocity, acceleration, force, and momentum, are
vectors. A quantity having direction as well as
magnitude
Magnitude is just
the measurement
without direction
• Kinetic energy is a scalar quantity; as it does
not have a direction.
– Velocity, acceleration, force, and momentum, are
vectors. A quantity having direction as well as
magnitude
Scalars and
Vectors. Learn
more at…
http://www.grc.
nasa.gov/WWW
/k12/airplane/vect
ors.html
• How you can remember the difference
between the two…
• How you can remember the difference
between the two…
Scales are still / Don’t have
direction
• How you can remember the difference
between the two…
Scales are still / Don’t have
direction
Just a cool fighter pilot name, Jet
Pilots travel with direction.
• Which are scalar quantities?
– Magnitude only
• Which are vector quantities?
– Magnitude and direction.
Magnitude is just the measurement without direction
• Which are scalar quantities?
– Magnitude only
• Which are vector quantities?
– Magnitude and direction.
Magnitude is just the measurement without direction
• Which are scalar quantities?
– Magnitude only
• Which are vector quantities?
– Magnitude and direction.
Magnitude is just the measurement without direction
• Which are scalar quantities?
– Magnitude only
• Which are vector quantities?
– Magnitude and direction.
Magnitude is just the measurement without direction
• Which are scalar quantities?
– Magnitude only
• Which are vector quantities?
– Magnitude and direction.
Magnitude is just the measurement without direction
• Which are scalar quantities?
– Magnitude only
• Which are vector quantities?
– Magnitude and direction.
Magnitude is just the measurement without direction
• Which are scalar quantities?
– Magnitude only
• Which are vector quantities?
– Magnitude and direction.
Magnitude is just the measurement without direction
• Which are scalar quantities?
– Magnitude only
• Which are vector quantities?
– Magnitude and direction.
Magnitude is just the measurement without direction
• Which are scalar quantities?
– Magnitude only
• Which are vector quantities?
– Magnitude and direction.
Magnitude is just the measurement without direction
• Which are scalar quantities?
– Magnitude only
• Which are vector quantities?
– Magnitude and direction.
Magnitude is just the measurement without direction
• Which are scalar quantities?
– Magnitude only
• Which are vector quantities?
– Magnitude and direction.
Magnitude is just the measurement without direction
• F=ma
– (Which is are scalars and which are vectors?)
• F=ma
– (Which is are scalars and which are vectors?)
• F=ma
– (Which is are scalars and which are vectors?)
Force has
magnitude
and direction
• F=ma
– (Which is are scalars and which are vectors?)
Force has
magnitude
and direction
• F=ma
– (Which is are scalars and which are vectors?)
Force has
magnitude
and direction
Mass: Magnitude Only
• F=ma
– (Which is are scalars and which are vectors?)
Force has
magnitude
and direction
Mass: Magnitude Only
• F=ma
– (Which is are scalars and which are vectors?)
Acceleration
has magnitude
and direction
Force has
magnitude
and direction
Mass: Magnitude Only
• Amount of KE depends on both the
objects mass and its velocity / (speed).
Copyright © 2010 Ryan P. Murphy
• Amount of KE depends on both the
objects mass and its velocity / (speed).
Copyright © 2010 Ryan P. Murphy
• Amount of KE depends on both the
objects mass and its velocity / (speed).
Copyright © 2010 Ryan P. Murphy
• Amount of KE depends on both the
objects mass and its velocity / (speed).
Copyright © 2010 Ryan P. Murphy
• Amount of KE depends on both the
objects mass and its velocity / (speed).
Copyright © 2010 Ryan P. Murphy
• Available worksheet, PE, KE, and ME.
• What is the kinetic energy of a 10 kilogram
cannon ball traveling at 50 meters per
second?
• m = 10 kg
• v = 50 m/s
Copyright © 2010 Ryan P. Murphy
• What is the kinetic energy of a 10 kilogram
cannon ball traveling at 50 meters per
second?
• m = 10 kg
• v = 50 m/s
Copyright © 2010 Ryan P. Murphy
• What is the kinetic energy of a 10 kilogram
cannon ball traveling at 50 meters per
second?
• m = 10 kg
• v = 50 m/s
Copyright © 2010 Ryan P. Murphy
• Don’t forget your order of operations.
Copyright © 2010 Ryan P. Murphy
• Don’t forget your order of operations.
• PEMDAS
Copyright © 2010 Ryan P. Murphy
• Don’t forget your order of operations.
• PEMDAS
• For KE, you must do exponents (E) before
multiplying (M).
Copyright © 2010 Ryan P. Murphy
• Don’t forget your order of operations.
• PEMDAS
• For KE, you must do exponents (E) before
multiplying (M).
Copyright © 2010 Ryan P. Murphy
• Don’t forget your order of operations.
• PEMDAS
• For KE, you must do exponents (E) before
multiplying (M).
Copyright © 2010 Ryan P. Murphy
• KE = 0.5 times 10 kg times (50) ² Joules
Copyright © 2010 Ryan P. Murphy
• KE = 0.5 times 10 kg times (50) ² Joules
• KE = 0.5 times 10 kg times 2,500 Joules
Copyright © 2010 Ryan P. Murphy
• KE = 0.5 times 10 kg times (50) ² Joules
• KE = 0.5 times 10 kg times 2,500 Joules
Copyright © 2010 Ryan P. Murphy
• KE = 0.5 times 10 kg times (50) ² Joules
• KE = 0.5 times 10 kg times 2,500 Joules
Copyright © 2010 Ryan P. Murphy
• KE = 0.5 times 10 kg times (50) ² Joules
• KE = 0.5 times 10 kg times 2,500 Joules
• KE = 5 kg times 2,500 Joules
Copyright © 2010 Ryan P. Murphy
•
•
•
•
KE = 0.5 times 10 kg times (50) ² Joules
KE = 0.5 times 10 kg times 2,500 Joules
KE = 5 kg times 2,500 Joules
KE =
Copyright © 2010 Ryan P. Murphy
•
•
•
•
KE = 0.5 times 10 kg times (50) ² Joules
KE = 0.5 times 10 kg times 2,500 Joules
KE = 5 kg times 2,500 Joules
KE = 12,500 Joules
Copyright © 2010 Ryan P. Murphy
•
•
•
•
KE = 0.5 times 10 kg times (50) ² Joules
KE = 0.5 times 10 kg times 2,500 Joules
KE = 5 kg times 2,500 Joules
KE = 12,500 Joules
Copyright © 2010 Ryan P. Murphy
• Available worksheet, PE, KE, and ME.
Laws of Motion and Simple Machines Unit

Centrifugal Force: (Does not exist) The Force that makes us
feel that a force is acting outward on a body moving around a
center, arising from the body's inertia
Copyright © 2010 Ryan P. Murphy

Centrifugal Force: (Does not exist) The Force that makes us
feel that a force is acting outward on a body moving around a
center, arising from the body's inertia
If I were to
throw up right
now which way
would it go?
Copyright © 2010 Ryan P. Murphy

Centrifugal Force: (Does not exist) The Force that makes us
feel that a force is acting outward on a body moving around a
center, arising from the body's inertia
Copyright © 2010 Ryan P. Murphy

Centrifugal Force: (Does not exist) The Force that makes us
feel that a force is acting outward on a body moving around a
center, arising from the body's inertia
Copyright © 2010 Ryan P. Murphy
Important Note:
Centrifugal force does not actually exist.
Important Note:
Centrifugal force does not actually exist. We are in a non-inertial coordinate
system. Nevertheless, it appears quite real to the object being rotated.
Centrifugal force is like Newton's "Every action has an equal an opposite
reaction.” When you step on the gas in your car you hit the seat behind you
as if you are going backwards but you are really going forwards. As soon as
you stop pulling on the merry go round (applying an inward, not
outward force) you will fly off in a straight line. No more force inward, no
more going in a circle.
Important Note:
Centrifugal force does not actually exist. We are in a non-inertial coordinate
system. Nevertheless, it appears quite real to the object being rotated.
Centrifugal force is like Newton's "Every action has an equal an opposite
reaction.” When you step on the gas in your car you hit the seat behind you
as if you are going backwards but you are really going forwards. As soon as
you stop pulling on the merry go round (applying an inward, not
outward force) you will fly off in a straight line. No more force inward, no
more going in a circle.
Learn more at… http://knowledgedrift.wordpress.com/strange-oddities-ofhistory/the-myth-of-centrifugal-force/
• Video! “Centrifugal Force” misplayed with
some kids who didn’t take this class.
– http://www.youtube.com/watch?v=XWCBk9Vl-rc
Note: All yellow print doesn’t actually exist.

Centripetal Force: Force that acts on a body
moving in a circular path and is directed
toward the center around which the body is
moving.
Copyright © 2010 Ryan P. Murphy
• Teacher Demonstration
– I will turn a pail of water upside down over my
head.
Copyright © 2010 Ryan P. Murphy

Why didn’t the water
fall out of the pail as
I was spinning it
around?
Laws of Motion and Simple Machines Unit
• Activity (Optional) Funky foam tube roller
coaster.
– Use ½ inch foam pipe insulation cut in half,
duct tape to connect the tubes and anchor, cup
to catch at end, and marbles.
• Create a one page visual of a roller
coaster with drawings.
– Name your coaster.
– Create a not to scale visual that will be
achievable with the materials provided by
teacher.
– Class will vote to choose a model and build
the coaster.
– Calculate the PE and KE.
– Find the mass of the marble.
– Measure the height of the coaster.
– Calculate the velocity.
• Distance / meters divided by seconds and direction
• Create a one page visual of a roller
coaster with drawings.
– Name your coaster.
– Create a not to scale visual that will be
achievable with the materials provided by
teacher.
– Class will vote to choose a model and then
build the coaster.
– Calculate the PE and KE.
– Find the mass of the marble.
– Measure the height of the coaster.
– Calculate the velocity.
• Distance / meters divided by seconds and direction
• Academic Link! (Optional) PE and KE
– http://www.youtube.com/watch?v=BSWl_Zj-CZs
• F=MA, PE, KE and more ramp activity.
– Available Sheet
• Activity! Kinetic and Potential Energy +
Newton’s Laws F=MA.
Copyright © 2010 Ryan P. Murphy
• Activity! Kinetic and Potential Energy +
Newton’s Laws F=MA.
Copyright © 2010 Ryan P. Murphy
Laws of Motion and Simple Machines Unit
• Hydropower : Potential energy turned into
kinetic energy of motion turned into kinetic
electrical energy.
Copyright © 2010 Ryan P. Murphy
• Hydropower : Potential energy turned into
kinetic energy of motion turned into kinetic
electrical energy.
Copyright © 2010 Ryan P. Murphy
• Hydropower gave rise to early industry.
– One of our earliest ways to harness energy.
Copyright © 2010 Ryan P. Murphy
• Hydropower gave rise to early industry.
– One of our earliest ways to harness energy.
Potential Energy
Copyright © 2010 Ryan P. Murphy
• Hydropower gave rise to early industry.
– One of our earliest ways to harness energy.
Potential Energy
Transfer to
Kinetic
Energy
Copyright © 2010 Ryan P. Murphy
• In Dinowrig, Wales. Water is pumped from
the lower lake to the upper lake when
electricity is low in demand.
• During times high electrical demand, the
stored potential energy flows downhill to
generate electricity (Kinetic).
• During times high electrical demand, the
stored potential energy flows downhill to
generate electricity (Kinetic).
• During times high electrical demand, the
stored potential energy flows downhill to
generate electricity (Kinetic).
• Kinetic energy to kinetic electrical energy
Copyright © 2010 Ryan P. Murphy
• Gravity turns potential energy in tides, into
kinetic energy (flowing tides) into kinetic
electrical energy.
Copyright © 2010 Ryan P. Murphy
• Geothermal
Copyright © 2010 Ryan P. Murphy
• Geothermal -Kinetic energy heat, turns water
into steam, water rises and runs a turbine to
generate electrical energy.
Copyright © 2010 Ryan P. Murphy
• Geothermal -Kinetic energy heat, turns water
into steam, water rises and runs a turbine to
generate electrical energy.
Copyright © 2010 Ryan P. Murphy
• Geothermal -Kinetic energy heat, turns water
into steam, water rises and runs a turbine to
generate kinetic electrical energy.
Copyright © 2010 Ryan P. Murphy
• Steam / Coal and wood burning electric
plant
• Nuclear energy – Nuclear reactions
generate kinetic electrical energy using
water, steam, and a turbine.
Laws of Motion and Simple Machines Unit
• Video Link! (Optional) Scalers and Vectors.
– http://www.youtube.com/watch?v=EUrMI0DIh40

Speed: A measure of motion, = distance
divided by time. D/T
Copyright © 2010 Ryan P. Murphy

Speed: A measure of motion, = distance
divided by time. D/T
Copyright © 2010 Ryan P. Murphy

Speed: A measure of motion, = distance
divided by time. D/T
Speed is the rate of motion, or the
rate of change of position.
Copyright © 2010 Ryan P. Murphy

Speed: A measure of motion, = distance
divided by time. D/T
Speed is the rate of motion, or the
rate of change of position.
Can only be zero or positive.
Copyright © 2010 Ryan P. Murphy
Distance = Speed ● Time
Distance = Speed ● Time
Distance = Speed ● Time
Distance = Speed ● Time
• How far did Joe walk if he walked a
steady 4 km/h for three straight hours?
• How far did Joe walk if he walked a
steady 4 km/h for three straight hours?
Distance = Speed ● Time
• How far did Joe walk if he walked a
steady 4 km/h for three straight hours?
Distance = Speed ● Time
Distance = 4 km/h ● 3 h
• How far did Joe walk if he walked a
steady 4 km/h for three straight hours?
Distance = Speed ● Time
Distance = 4 km/h ● 3 h
Distance =
• How far did Joe walk if he walked a
steady 4 km/h for three straight hours?
Distance = Speed ● Time
Distance = 4 km/h ● 3 h
Distance = 12 km
Distance
Speed = --------------Time
• What is Joes speed if he walked a steady
5 km in one hour?
Rate / Speed R =
• What is Joes speed if he walked a steady
5 km in one hour?
5 km
Rate / Speed R =
or 5 km/hr
1 hour
• What is Joes speed if he walked 5 km in
one hour?
5 km
Rate / Speed R =
or 5 km/hr
1 hour
• Juan travels 300km in 6hrs. Find his
average speed in km/h.
• Juan travels 300km in 6hrs. Find his
average speed in km/h.
• Speed = Distance / Time
• Juan travels 300km in 6hrs. Find his
average speed in km/h.
• Speed = Distance / Time
300km
• Speed = ------------ = 50 km/h
6h
• Juan travels 300km in 6hrs. Find his
average speed in km/h.
• Speed = Distance / Time
300km
50km
• Speed = ------------ = --------6h
h
Laws of Motion and Simple Machines Unit
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
4m
8m
Copyright © 2010 Ryan P. Murphy
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
4m
8m
Copyright © 2010 Ryan P. Murphy
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
Now use Pythagorean
Theorem A²+B²=C²
4m
8m
Copyright © 2010 Ryan P. Murphy
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
Now use Pythagorean
Theorem A²+B²=C²
4m
4m² = 16 m
8m
Copyright © 2010 Ryan P. Murphy
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
Now use Pythagorean
Theorem A²+B²=C²
4m
4m² = 16 m
8m
8m² = 64 m
Copyright © 2010 Ryan P. Murphy
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
Now use Pythagorean
Theorem A²+B²=C²
4m
16 m + 64 m =
4m² = 16 m
8m
8m² = 64 m
Copyright © 2010 Ryan P. Murphy
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
Now use Pythagorean
Theorem A²+B²=C²
4m
16 m + 64 m = 80 m
4m² = 16 m
8m
8m² = 64 m
Copyright © 2010 Ryan P. Murphy
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
Now use Pythagorean
Theorem A²+B²=C²
4m
16 m + 64 m = 80 m
4m² = 16 m
√ 80m =
8m
8m² = 64 m
Copyright © 2010 Ryan P. Murphy
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
Now use Pythagorean
Theorem A²+B²=C²
4m
16 m + 64 m = 80 m
√ 80m = 8.94 m
8.94m
8m
4m² = 16 m
8m² = 64 m
Copyright © 2010 Ryan P. Murphy
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
Copyright © 2010 Ryan P. Murphy
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
Copyright © 2010 Ryan P. Murphy
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
Copyright © 2010 Ryan P. Murphy
• Velocity deals with displacement.
– Displacement measures where you end up
relative to where you started.
100m
60m
30m
50m
Copyright © 2010 Ryan P. Murphy
Newton's Laws of Motion, Forces in Motion and Simple Machines Unit
• Forces in Motion, Speed, Velocity,
Acceleration and more available sheet.
• It took Lightning McGreen 2.5 hours to travel
600 kilometers.
– How fast was he going in Kilometers an
hour?
Copyright © 2010 Ryan P. Murphy
• It took Lightning McGreen 2.5 hours to travel
600 kilometers.
– How fast was he going in Kilometers an
hour?
Copyright © 2010 Ryan P. Murphy
• It took Lightning McGreen 2.5 hours to travel
600 kilometers.
– How fast was he going in Kilometers an
hour?
Speed = Distance / Time
Copyright © 2010 Ryan P. Murphy
• It took Lightning McGreen 2.5 hours to travel
600 kilometers.
– How fast was he going in Kilometers an
hour?
Speed = Distance / Time
Copyright © 2010 Ryan P. Murphy
• It took Lightning McGreen 2.5 hours to travel
600 kilometers.
– How fast was he going in Kilometers an
hour?
Speed = Distance / Time
Speed = 600 km / 2.5 h
Copyright © 2010 Ryan P. Murphy
• It took Lightning McGreen 2.5 hours to travel
600 kilometers.
– How fast was he going in Kilometers an
hour?
Speed = Distance / Time
Speed = 600 km / 2.5 h
Speed = 240 km/h
Copyright © 2010 Ryan P. Murphy
• Answer: 240 km/h
– Speed is distance over time.
Copyright © 2010 Ryan P. Murphy
• Forces in Motion, Speed, Velocity,
Acceleration and more available sheet.
• It took Ms. Rally 4 hours to travel 165
kilometers due North.
– What was the velocity of her car in
Kilometers an hour?
Copyright © 2010 Ryan P. Murphy
Newton's Laws of Motion, Forces in Motion and Simple Machines Unit
• Catching the Violators Available Sheet.
• Activity! Looking for the Violators.
• Activity! Looking for the Violators.

Safety is a big concern here. Students
need to be far from road. Outside
behavior must be excellent.
• Activity! Looking for the Violators.


Safety is a big concern here. Students
need to be far from road. Outside
behavior must be excellent.
We also must try to conceal ourselves
at all time. We do not want anyone to
see us / slow down.
• Activity! Optional
– Teacher measures out 300 feet along road and
puts a cone at the start and finish a short distance
from the roads edge.
– From a distance, students use a stopwatch to
time the speed of cars from the start cone to the
finish cone.
– Speed = Distance (300 ft) divided by time (ft/sec.)
– Multiply by .681 (ft/sec to mph conversion) = mph
– Over 30 mph is speeding in the village.
– Create list of all the speeds and then average.
– Does the village have a speeding problem?
Laws of Motion and Simple Machines Unit
• Note: This is nice to know.
• Average vs. Instantaneous Velocity
– Instantaneous Velocity: When an object starts
and then speeds up (not moving at one
steady speed).
• Note: This is nice to know.
• Average vs. Instantaneous Velocity
– Instantaneous Velocity: When an object starts
and then speeds up (not moving at one
steady speed).
Instantaneous Velocity Definition: The velocity
of an object at any given instant (especially
that of an accelerating object); the limit of the
change in position per unit time as the unit of
time approaches zero; expressed
mathematically
• Note: This is nice to know.
• Average vs. Instantaneous Velocity
– Instantaneous Velocity: When an object starts
and then speeds up (not moving at one
steady speed).
Instantaneous Velocity Definition: The velocity
of an object at any given instant (especially
that of an accelerating object); the limit of the
change in position per unit time as the unit of
time approaches zero; expressed
mathematically
• Average: The result obtained by adding
several quantities together and then dividing
this total by the number of quantities; the
mean
• Average: The result obtained by adding
several quantities together and then dividing
this total by the number of quantities; the
mean.
• Available Extension PowerPoint and
Available Sheets.
– Metric Conversions and Scientific Notation.
• Video Link!, Position, Velocity, and
Acceleration.
– Please record some of the equations when I
pause the video.
• http://www.youtube.com/watch?v=O6Onfqt-Vzw

Acceleration = The rate of change in
velocity. (m/s)
Copyright © 2010 Ryan P. Murphy

Acceleration = The rate of change in
velocity. (m/s)
Copyright © 2010 Ryan P. Murphy

Acceleration = The rate of change in
velocity. (m/s)
Copyright © 2010 Ryan P. Murphy
Newton's Laws of Motion, Forces in Motion and Simple Machines Unit
• A unicyclist was traveling at 2 m/s South
and speed up to 6 m/s in 3 seconds.
– What was the acceleration?
Copyright © 2010 Ryan P. Murphy
• A unicyclist was traveling at 2 m/s South
and speed up to 6 m/s in 3 seconds.
– What was the acceleration?
Copyright © 2010 Ryan P. Murphy
• A unicyclist was traveling at 2 m/s South
and speed up to 6 m/s in 3 seconds.
– What was the acceleration?
Copyright © 2010 Ryan P. Murphy
• The final velocity (6 m/s) minus the starting
velocity (2 m/s) South divided by the time (3
seconds) = acceleration.
6 m/s – 2m/s
3s – 0s
Copyright © 2010 Ryan P. Murphy
• The final velocity (6 m/s) minus the starting
velocity (2 m/s) South divided by the time (3
seconds) = acceleration.
4 m/s
3s
Copyright © 2010 Ryan P. Murphy
• The final velocity (6 m/s) minus the starting
velocity (2 m/s) South divided by the time (3
seconds) = acceleration.
4 m/s
= 1.333 m/s South
3s
Copyright © 2010 Ryan P. Murphy
Acceleration: Learn more at…
http://www.physicsclassroom.com/class/1dkin/u1l1e.cfm
Copyright © 2010 Ryan P. Murphy
• Video Link! Khan Academy. Acceleration.
• (Optional) complete problems as he does.
– Be active in your learning not passive.
– http://www.khanacademy.org/science/physics/
mechanics/v/acceleration
Copyright © 2010 Ryan P. Murphy

Deceleration: To slow velocity.
-
Copyright © 2010 Ryan P. Murphy

Deceleration: To slow velocity.
 Formula
is the same as acceleration but will
be a negative value.
Copyright © 2010 Ryan P. Murphy

Deceleration: To slow velocity.
 Formula
is the same as acceleration but will
be a negative value.
Note: There is no "deceleration",
only negative acceleration
Copyright © 2010 Ryan P. Murphy
• The formula is the same, but the value will
be a negative.
– Deceleration = (final velocity – starting
velocity) divided by time.
Copyright © 2010 Ryan P. Murphy
• Forces in Motion, Speed, Velocity,
Acceleration and more available sheet.
• Lightning McGreen was traveling 200 m/s
West when he slowed to 50 m/s in 10
seconds.
– What was his deceleration?
Copyright © 2010 Ryan P. Murphy
• Lightning McGreen was traveling 200 m/s
West when he slowed to 50 m/s in 10
seconds.
– What was his deceleration?
Copyright © 2010 Ryan P. Murphy
Laws of Motion and Simple Machines Unit

Joule: Unit of energy, work, or amount of
heat.
 Equal
to the energy expended in applying a force
of one newton through a distance of one meter.
Copyright © 2010 Ryan P. Murphy

Joule: Unit of energy, work, or amount of
heat.
 Equal
to the energy expended in applying a force
of one newton through a distance of one meter.
Copyright © 2010 Ryan P. Murphy

Joule: Unit of energy, work, or amount of
heat.
 Equal
to the energy expended in applying a force
of one newton through a distance of one meter.
Copyright © 2010 Ryan P. Murphy

Joule: Unit of energy, work, or amount of
heat.
 Equal
to the energy expended in applying a force
of one newton through a distance of one meter.
Copyright © 2010 Ryan P. Murphy
Newton's Laws of Motion, Forces in Motion and Simple Machines Unit
• A bulldozer exerts 50,000 newtons over a
distance of 6 meters.
– Work = Force times Distance.
– How much work was bulldozer doing?
Copyright © 2010 Ryan P. Murphy
• A bulldozer exerts 50,000 newtons over a
distance of 6 meters.
– Work = Force times Distance.
– How much work was bulldozer doing?
Copyright © 2010 Ryan P. Murphy
• A bulldozer exerts 50,000 newtons over a
distance of 6 meters.
– Work = Force times Distance.
– How much work was bulldozer doing?
“We need some
music to help
us through this
question.”
http://www.youtube.com/
watch?v=dO_PL3V1c4Y
Copyright © 2010 Ryan P. Murphy
• A bulldozer exerts 50,000 newtons over a
distance of 6 meters.
– Work = Force times Distance.
– How much work was bulldozer doing?
“Can We Do It?”
Copyright © 2010 Ryan P. Murphy
• W = F times D
W = ? Joules
F = 50,000 newtons
D=
Copyright © 2010 Ryan P. Murphy
• W = F times D
W = ? Joules
F = 50,000 newtons
D = 6 meters
Copyright © 2010 Ryan P. Murphy
• W = F times D
W = ? Joules
F = 50,000 newtons
D = 6 meters
“Yes We Can!”
Copyright © 2010 Ryan P. Murphy
• Answer: 300,000 Joules
Copyright © 2010 Ryan P. Murphy
• Answer: 300,000 Joules
“We Did it!”
Copyright © 2010 Ryan P. Murphy
• Forces in Motion, Speed, Velocity,
Acceleration and more available sheet.
• 10,000 Joules of work were accomplished by
a group of sled dogs exerting 400 newtons.
How far did the dogs travel in meters?
Copyright © 2010 Ryan P. Murphy
• Activity! PowerPoint Review Game Part II
Copyright © 2010 Ryan P. Murphy
Areas of Focus within The Motion and Machines Unit:
Newton’s First Law, Inertia, Friction, Four Types of Friction, Negatives and
Positives of Friction, Newton’s Third Law, Newton’s Second Law, Potential Energy,
Kinetic Energy, Mechanical Energy, Forms of Potential to Kinetic Energy, Speed,
Velocity, Acceleration, Deceleration, Momentum, Work, Machines (Joules),
Catapults, Trajectory, Force, Simple Machines, Pulley / (MA Mechanical
Advantage), Lever / (MA), Wedge / (MA), Wheel and Axle (MA), Inclined Plane /
(MA), Screw / (MA) - Mousetrap Cars
Link to unit
Laws of Motion and Simple Machines Unit
• This PowerPoint is one small part of my Laws of Motion
and Simple Machines entire unit that I offer on TpT
• This unit includes…
• A 3 Part 2,300+ Slide PowerPoint and student version.
• 15 Page bundled homework package and 11 pages of
units notes that chronologically follow the PowerPoint
• 3 PowerPoint review games (150+ slides each), 20+
videos / Links, rubrics, games, activity sheets, and much
more.
• Laws of Motion and Simple Machines Unit
• Please open the welcome / guide document
on each unit preview.
– This document will describe how to utilize these
resources in your classroom and provide some
curriculum possibilities.
• Please visit the links below to learn more
about each of the units in this curriculum and
to see previews of each unit.
– These units take me four busy years to complete
with my students in grades 5-10.
Earth Science Units
Extended Tour Link and Curriculum Guide
Geology Topics Unit
http://sciencepowerpoint.com/Geology_Unit.html
Astronomy Topics Unit
http://sciencepowerpoint.com/Astronomy_Unit.html
Weather and Climate Unit
http://sciencepowerpoint.com/Weather_Climate_Unit.html
Soil Science, Weathering, More
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Water Unit
http://sciencepowerpoint.com/Water_Molecule_Unit.html
Rivers Unit
http://sciencepowerpoint.com/River_and_Water_Quality_Unit.html
= Easier
5th – 7th grade
= More Difficult
6th – 8th grade
= Most Difficult
8th – 10th grade
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Science Skills Unit
http://sciencepowerpoint.com/Science_Introduction_Lab_Safety_Metric_Methods.
html
Motion and Machines Unit
http://sciencepowerpoint.com/Newtons_Laws_Motion_Machines_Unit.html
Matter, Energy, Envs. Unit
http://sciencepowerpoint.com/Energy_Topics_Unit.html
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Extended Tour Link and Curriculum Guide
Human Body / Health Topics
http://sciencepowerpoint.com/Human_Body_Systems_and_Health_Topics_Unit.html
DNA and Genetics Unit
http://sciencepowerpoint.com/DNA_Genetics_Unit.html
Cell Biology Unit
http://sciencepowerpoint.com/Cellular_Biology_Unit.html
Infectious Diseases Unit
http://sciencepowerpoint.com/Infectious_Diseases_Unit.html
Taxonomy and Classification Unit
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Evolution / Natural Selection Unit
http://sciencepowerpoint.com/Evolution_Natural_Selection_Unit.html
Botany Topics Unit
http://sciencepowerpoint.com/Plant_Botany_Unit.html
Ecology Feeding Levels Unit
http://sciencepowerpoint.com/Ecology_Feeding_Levels_Unit.htm
Ecology Interactions Unit
http://sciencepowerpoint.com/Ecology_Interactions_Unit.html
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• Thank you for your time and interest in this
curriculum tour. Please visit the welcome / guide on
how a unit works and please link to the many unit
previews to see the PowerPoint slideshows, bundled
homework packages, review games, unit notes, and
much more. Thank you again and please feel free to
contact me with any questions you may have. Best
wishes.
• Sincerely,
• Ryan Murphy M.Ed
• www.sciencepowerpoint@gmail.com