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Notes 5
Chapter 4 : Newton’s Law of Inertia
Class work : What changes
motion ?

Materials : Truck, pennies
wood and books
1. Predict what will happen
1. My prediction is
to the pennies and the car
_______________.
if you roll the car into the
book.
2. Test your prediction :
Write your observation
2. ________________
3. What might be the
reason for the
difference between the
motion of the car and
the pennies after the
impact ?
3. _______________.
4. What is Inertia ?
5. What is Newton’s 1st
law of motion? p46
Newton’s 1st Law of Motion
6. If the car is traveling at a
speed of 65mi/h on Freeway
5 , what is the passenger’s
speed ?
7. What happens to the car
when the driver suddenly
stepped on the brake ?
8. What happens to the
passenger without seatbelt
in this situation?
9. What is the purpose of
wearing a seatbelt ?
Class work: Newton’s 1st Law
1. If the car is moving at 70
mi/h, what is the
passenger’s speed
inside this moving car?
2. A. What happens to the
car if the driver suddenly
stepped on the brake?
b. How about it’s
passenger without a
seatbelt?
3. What is the purpose of
the seatbelt in a moving
vehicle?
Review Questions p 56
#6, 7
Mass and Weight
Mass in kg
1.
2.
3.
4.
5.
16 g
303 g
40 kg
500 g
10 g
Weight in Newtons = mass
(m) X acceleration due
to gravity (g=10m/s2)
W= mg
1. 16 g kg = .016kg
Weight = .016 kg X 10
m/s2 = .16Newtons or
W= 0.16 N
Review Questions p 56
Discuss #9,10,
HW 13,21, 22,23,
24,25 ,38,39
Released Test Questions
#12
Notes 5
Chapter 5 : Newton’s Law of Inertia
Classwork: Tug of
War
Write your observations
and explain why .
1. Stand Off
Observation :
Explanation :
2. Who won? Why?
Observation :
Explanation :
Chapter 12
Section 2 What Is a Force?
Combined Effect of Forces
 The net force is the combination of all
the forces acting on an object.
 When forces act in the same direction,
you add the forces to determine the net
force.
 When two forces act in opposite
directions, you subtract the smaller
force from the larger force to determine
the net force.
1. Describe force?p344
2. What is the unit of force?p344
3. What is the letter representation of
force?
4. What is a net force? P 345
5. Describe a positive force .
6. Describe a negative force .
Net Force = F net
Instructions :
What is the net force if
these forces act upon
an object ?p345
What will happen to the
object ?
1. F1 = 5 N to the right
F2 = 10 N to the left
2. F1 = 10 N to the right
F2 = 10 N to the left
3. F1 = 20 N to the right
F2 = 10 N to the left
F3 = 10 N to the left
4. F1 = 20 N to the right
F2 = 10 N to the left
5. F1 = 20 N upwards
F2 = 20 N
downwards
6. F1 = 30 N up and
Weight = 20 N
F2 =5N up
Differentiate a balanced force
and an unbalanced force
Which causes change in
motion : balanced or
unbalanced force
Review Questions p57
#15, 16
Released Test Questions
#11
Trucks and Small Cars
Newton’s Second Law of
Motion
1. What is Newton’s 2nd
Law of Motion? p60
2. Express this law in an
equation. p61
3. What is the unit of Force
?
4. What is the equivalent of
Newton ?
F = ma
F is Force in newtons (N)
m is mass in kilograms (kg)
a is acceleration in m/s2
Formula  Force
= m a
Units  Newtons = kg m /s2
Force
Newton (N)
F= ?
F= m X a
F= 10kg X 5m/s2
F= 50 N
F= 50 N
Mass
Kg
m = 10 kg
Acceleration
m/s/s= m/s2
a = 5 m/s2
m= 20kg
If the mass
increases, the
acceleration
decreases.
a= F/m
a= 50N/20kg
a= 2.5 m/s2
Manipulation of Force
Formula
F=mXa
a=
m=
W=mXg
g=
m=
Classwork 30pts: Changes in mass,
net force and acceleration
Show solution
Fill in the table with data and compare each row .
F in N
m in kg
a in m/s2
1._________
10
10
2._________
20
10
3._________
10
10
50
10
4._________
25
10
5._________
12.5
6._________
2.5
1. How is acceleration affected by
an increase in force ?
2. What happens if the force
applied decreases ?
3. What happens to the
acceleration if the mass of the
object is increased ?
4. If the mass of the object is
decreased , what happens to
its acceleration ?
CW: Problem Solving
using F=ma
1. A 52 kg water skier is
being pulled by the
speedboat. The force
causes her to accelerate
from 10 m/s to 20 m/s in
5sec. Calculate the net
force exerted by the
speedboat that causes
this acceleration .
1 What is the net force
on a 1,000 kg elevator
accelerating at 2m/s2?
2 What net force is
needed to accelerate a
55 kg cart at 15 m/s2?
 Questions : #1 / p63
Review Questions #7
/p71
 #19,20 21,35,36,37
Released Test Questions
 # 13,14,15
Read Chapter 5 Summary
p 71
 Read alternate
Explain
Read 5.4 / p 63
Write 5 information
about friction.
 Draw Figure 5.6
Testing Amount of Friction –opposes motion
1. Wood on Wood
2. Wood on Ceramics
3. Rubber on Dry
Ceramics
4. Steel on Ceramic
5. Steel Pin on Stone
6. Rubber on Wet
Ceramics
7. Rubber on carpet
Slides smoothly
Slides roughly
X moves easily
less friction
X less motion
more friction
Friction Force
Friction is a force opposing motion.
Unit of Friction force is Newton (N).
Factors affecting friction are the following :
a. weight of the object
b. type of surface
Equation of Friction
Friction force (f) = u Fn
f – friction force in newtons (N)
u – coefficient of friction (type of
surface)
Fn – normal force (force perpendicular
to the surface)
Chapter 12
Matter in Motion
Types of Friction
1. Static friction- friction present between
surfaces that opposes sliding
2. Sliding (kinetic) friction –friction force
when an object slides over a surface.
3. Rolling friction- friction force when
rollers and wheels roll over a surface
4. Air friction- friction force present that
opposes the fall of an object due to the
pull of gravity.
Review Questions p 71
 #8 ,9
Problem Solving on
Friction
4. The force of sliding friction between the
50 kg crate and the floor is 75 N, so an
applied force of 75 N will keep it sliding.
How fast will it slide?
5. What will be the acceleration of the
sliding crate if we apply a force of
100N? How fast will it slide ?
Testing Amount of Friction –opposes motion
1. Wood on Wood
2. Wood on Ceramics
3. Rubber on Dry
Ceramics
4. Steel on Ceramic
5. Steel Pin on Stone
6. Rubber on Wet
Ceramics
7. Rubber on carpet
Slides smoothly
Slides roughly
X moves easily
less friction
X less motion
more friction
Friction Force
Friction is a force opposing motion.
Unit of Friction force is Newton (N).
Factors affecting friction are the following :
a. weight of the object
b. type of surface
Equation of Friction
Friction force (f) = u Fn
f – friction force in newtons (N)
u – coefficient of friction (type of
surface)
Fn – normal force (force perpendicular
to the surface)
Chapter 12
Matter in Motion
Types of Friction
1. Static friction- friction present between
surfaces that opposes sliding
2. Sliding (kinetic) friction –friction force
when an object slides over a surface.
3. Rolling friction- friction force when
rollers and wheels roll over a surface
4. Air friction- friction force present that
opposes the fall of an object due to the
pull of gravity.
Gravity - pull to the center of the earth
Gravitational acceleration(g) = 9.8m /sec2 or
10 m/ sec2 =32 ft/ sec 2
Free Fall – motion going down due to gravity
Weight –downward force due to gravity, Newtons
weight = mass,kg X gravitational acceleration(g)
Air Friction , Newton– force that opposes the free fall
and slows down any falling object ; Parachute
provides air friction. The larger the area of the
parachute, the greater the air friction that slows down
the free fall.
Terminal Velocity – constant velocity when the
weight of the object equals the air friction.
Notes 17
Chapter 13 Force of Gravity
 Shapes our solar system and universe
Law of Universal
Gravitation
 Every point mass attracts every single other
point mass by a force pointing along the line
intersecting both points. The force is
proportional to the product of the two masses
and inversely proportional to the square of the
distance between them:[3]
F = G m1m2 / d2
where:
F- force between masses
G= Gravitational Constant
6.67 X 10-11 Nm2/kg2
m1 and m2 – masses of the objects
d= distance between 2 masses
 Assuming SI units, F is measured in newtons
(N), m1 and m2 in kilograms (kg), r in meters
(m), and the constant G is approximately equal
to 6.674×10−11
N m2 kg−2.[4] The value of the constant G was
first accurately determined from the results of
the Cavendish experiment conducted by the
British scientist Henry Cavendish in 1798,
although Cavendish did not himself calculate a
numerical value for G[5]. This experiment was
also the first test of Newton's theory of
gravitation between masses in the laboratory. It
took place 111 years after the publication of
Newton's Principia and 71 years after Newton's
death, so none of Newton's calculations could
use the value of G; instead he could only
calculate a force relative to another force.
Problem :
 Compute the Force of Gravity between
0.3 kg masses whose centers are 1.5 m
apart.
Released Test Questions
 #16,17
Notes 17 : Chapter 13 Sec 2 :
Gravity - pull to the center of the earth
Gravitational acceleration(g) = 9.8m /sec2 or
10 m/ sec2 =32 ft/ sec 2
Free Fall – motion going down due to gravity
Weight –downward force due to gravity, Newtons
weight = mass,kg X gravitational acceleration(g)
Air Friction , Newton– force that opposes the free fall
and slows down any falling object ; Parachute
provides air friction. The larger the area of the
parachute, the greater the air friction that slows down
the free fall.
Terminal Velocity – constant velocity when the
weight of the object equals the air friction.
Newton’s 3rd Law of Motion:
Law of Action and Reaction
I. What are the 2 things reacting
in the balloon race? 5pts
2. What force caused the balloon
to move forward ?5pts
3. Draw the diagram with the
balloon moving forward and
the direction of air exit .5pts
4.
1. What is Newton’s 3rd Law
of Motion? P 389
2. What are the 2 things
reacting in the movement
of the swimmer in Fig 6
p 389? 5pts
3. Draw and explain the
movement of the rocket on
Fig 7. P 390
5pts
”
Chapter 13 Sec 2
Vocabulary: p 370-382











Gravity
Law of Universal Gravitation
Gravity and falling objects
Free Fall
Terminal Velocity
Projectile motion
Projectile
Trajectory
Air resistance
Orbiting
Centripetal Force
Weight is a Force
1. What is Mass? P 374
2. What is Weight
?p374
3. What is the unit of
weight?
4. What is the formula
or equation of
weight?
Experiment
Mass and Weight
I. Purpose : To differentiate Mass and Weight
10pts
II. Materials : 10pts
2 blocks of wood
Spring scale
III. Hypothesis: How does the mass of an object
affect the weight? 20pts
Use If and then . ( One sentence only)
IV. Data Table
Blocks
Heavy
Light
Mass, Mass,
g
kg
Calculated
Weight,
Newton
Measured
Weight,
Newton
Analysis and Conclusion
1.
2.
3.
4.
What is the purpose of this experiment?
What was your hypothesis?
Was your hypothesis correct ? Why?
When the mass of the object is greater ,
what happens to the weight of the
object?
5. What is the acceleration due to gravity?
Explain its effect on free falling object.
Momentum
1. What comes into your mind when you
hear the word “MOMENTUM
2. Define momentum
p 396
3. Formula of momentum p396
4. Unit of momentum
Problem Solving
1.Which have greater momentum : 3 kg
sledge hammer swung at 1.5m/s or a 4kg
sledgehammer swung at 0.9m/s?
2. Practice Problem # 1 p 396
A golf ball travels at 16 m/s, while a
baseball moves at 7 m/s. The mass of
the golf ball is 0.045 kg and the mass of
the baseball is 0.14 kg. Which has
greater momentum? 20 pts
3. What is the momentum of a bird with a
mass of 0.018 kg flying at 15 m/s? 10 pts
Law of Conservation of
Momentum
1. State the Law of
Conservation of
Momentum p 397
2. Equation of the Law
of Conservation of
Momentum
Law of Conservation of Momentum
Problem p 398 Fig 19
a. What happens when two trains of the same mass of
30,000 kg collide? Train X is traveling at 10 m/s.
Train X catches up train Y which is traveling at 5m/s
and bump into it. What will be the speed of train X if
train Y moves at a speed of 10m/s after the
collision?
b. Suppose that the train X moves down the track at
10 m/s and hits train Y,which is not moving. What
happens to train Y when train X stopped after the
collision.
c. Suppose after the collision in problem b, instead of
bouncing off each other , the two train cars couple
together when they hit. What will be their velocity
after collision?
Directly Proportional
- Is when x increases
the y increases as
well or when x
decreases the y
decreases .
 Inversely
proportional – is
when x increases , y
decreases or when x
decreases the y
increases
Forces Ca Standard
8.2. a-c
 Objectives : I will be able to define a force and
determine if the force is positive or negative based on
its direction.
 I will be able to plot forces based on its direction using
a protractor
 I will be able to explain the 1st law of Newton
 I will be able to calculate force using 2nd law of Newton
F= ma and calculate weight using W=mg g = 9.8 m/s2
 I will define gravity, projectile, inertia, mass, force ,air
resistance, projectile motion and trajectory
Materials:
Physical Science
Textbook
Rope
Handkerchief
Toy cars
Incline plane
Blocks
Force measurer
stopwatch
Protractor
Rulers
Objectives:
To verify what are the effects of increasing and
decreasing the amount of force on the object’s
acceleration.
To verify the effect of gravity and air resistance
on the object’s motion.
To understand the word momentum through
demonstration and calculation.
Experiment : Forced to
Accelerate -100 pts
I.
II.
Purpose: To determine the relationship of
force and acceleration 10 pts
Materials : 10 pts
spring scale
string
stopwatch
wood blocks
meter stick
masking tape
III. Procedures:
1. Attach a loop of string to a block.
2. Attach a spring scale to the loop of string.
3. Pull the spring scale straight to apply the
lowest amount of force just to move the
block.
4. Record this smallest force on the first line.
5. Add 1N to the smallest force on step 5 and
record this on the second line.
7 . Pull the spring scale with the force on the
second line and measure the time it takes for
the object to move from start to finish. Record
as t1
8. Repeat step 7 twice . Record as t2 and t3.
9. Calculate average time using
t = t1 + t2 + t3 / 3
10. Calculate speed by dividing distance by
average time .Use 1m as distance. Record.
11. Calculate average acceleration by
a=Vf - 0 / ave time
IV. Data Table
Force t1
,N
2N
3N
4N
5N
t2
t3
Ave
time
Ave
Speed
= Vf
a = Vf0/t
V. Graph Force vs. Acceleration
VI. Analysis and Conclusion
1.
2.
What happened to the acceleration when the force
increases by 1N ? 2N ? 3N?
What generalization can we derive from this
experiment?
Forces Ca Standard
8.2. a-c
 Objectives : I will be able to define a force and
determine if the force is positive or negative based on
its direction.
 I will be able to plot forces based on its direction using
a protractor
 I will be able to explain the 1st law of Newton
 I will be able to calculate force using 2nd law of Newton
F= ma and calculate weight using W=mg g = 9.8 m/s2
 I will define gravity, projectile, inertia, mass, force ,air
resistance, projectile motion and trajectory
Parachute Design ( 100 pts)
Single space Font 12
Due Date : March 26, 2007
Display Board or Technical Paper
I.
Problem :5 pts. To construct a
parachute that will drop from 2m
height in 5- 5.5 sec without
breaking the egg
II
Introductory Information 10 pts :
Purpose, Parcahute,
Newton’s Laws of Motion, air friction,
weight, mass, acceleration due to
gravity, gravity, parachute design,
free fall, terminal velocity
Introductory Information 10 pts :
Purpose, Parcahute,
Newton’s Laws of Motion, air friction,
weight, mass, acceleration due to
gravity, gravity, parachute design,
free fall, terminal velocity – at least
3 resources 2 pages
III. List of Materials 5 pts
IV. Detailed Drawing with
measurements 5 pts
for each design ( at least 5 designs )
V. Computations : 5 pts
Surface Area of each Parachute
Design
VI. Procedures 5 pts
VII. Data Table 10 pts
VIII. Graph 5 pts
( Area vs
Speed)
IX. Analysis and Conclusion 10 pts
Parachute Design ( 300
pts)
I.
II.
Cover Page 10pts
Purpose :To construct a parachute
that will drop from 2m height in 3- 3.5
sec without breaking the egg.
To document the project
using a display board and 10-15 pages
technical paper.
III. Introductory Information 10 pts :
Purpose, Parachute,
Newton’s Laws of Motion, air friction,
weight, mass, acceleration due to gravity,
gravity, parachute design, free fall,
terminal velocity, motion, speed, distance
, velocity
IV. Hypothesis: If … then….
V. Experimental:
a. Materials
b. Procedures
c. Variables
VI. Detailed Drawing with measurements
5 pts for each design ( at least 5 designs )
VII. Computations : 5 pts
Surface Area of each Parachute Design
VIII. Data Table 10 pts
IX. Graph 5 pts ( Area vs Speed)
X. Analysis and Conclusion 10 pts
XI. Bibliography
XII. Acknowledgements
XIII. Daily Log
Hypothesis
If the area of the parachute is bigger than
588 cm2, with ________ shape using
___________ materials , then the egg
will land safely in 3-3.5 sec.
Forces Ca Standard
8.2. a-c
 I will be able to define a force and determine if the
force is positive or negative based on its direction.
 I will be able to plot forces based on its direction using
a protractor
 I will be able to explain the 1st law of Newton
 I will be able to calculate force using 2nd law of Newton
F= ma and calculate weight using W=mg g = 9.8 m/s2
 I will define gravity, projectile, inertia, mass, force ,air
resistance, projectile motion and trajectory
Objectives:
To test the roller coaster and parachute designs.
To take pictures while testing and constructing.
To measure time and speed using V=d/t
To re-adjust all designs to conform to desired
specifications.
To fill in all data tables.( Data Table 1-3)
To graph the data using excel.
To analyze results by answering all guide questions.
To finish the documentation (technical paper and display )
Experimental
Materials:
Books
Computer
Log book
Display board
Printer
Supplies
Paper
Plastic
String
Raw Egg
Timer
Meter stick
Experimental Procedures
1. Gather all materials.
2. Draw at least 5 designs with measurements
in each dimension with area = 588 cm2.
3. Construct the 5 parachutes and test.
4. Test the 5 parachutes whether the egg will
land safely. Record it in Data Table 1.
5. Measure the drop time of each parachute
for three times. Record it in Data Table 2.
6. Calculate the average drop time for each
parachute.
7. Calculate the speed of each parachute
using V= d / t.
8. Record the average speed in Data Table3.
Data Table 1
Parachute
Design
Area,cm2
1 A=____
2 A=_____
3 A=_____
Safely
Data Table 2
Parachute Trial 1
Trial 2
Trial 3
Ave
DropTime DropTime, DropTime, Drop
sec
sec
Time,
,sec
sec
Parachute
1
Parachute
2
Parachute
3
Data Table 3
Parachute Design
Parachute 1
Parachute 2
Parachute 3
Parachute 4
Speed, m/s
Graph
Graph 1 : Area VS. Ave Time
Graph 2: Area VS. Ave Speed
Analysis and Conclusion
1. What are the science principles of this
project? Discuss
2. How does gravity affect a free falling object
like a parachute?
3. How does the air friction affect the motion of
the parachute? Does air friction provide an
unbalanced force? Explain
4. What did you do to make sure the raw egg
lands safely?
5 . How does the area affects air friction?
6. What did you do to make the drop time
between 3-3.5 sec?
7. How does the area affects the drop
time ?
8. How does the area affects the speed?
Bibliography:
You should have at least 3 sources:
Books:
Title, Authors, Edition, Publishing Company,
Date of Publication, pages
Web:
Sponsor of the Web site, Web Address,
Author, title of the page, Date of Information,
Date when the information was taken.
 Parachute: Web
www.basd.net/technology/STEEP/Technolgy
/3.6/Para%20 Design%20 ppdb.htm
Roller Coaster:
Roller Coaster Physics. Discovery Channel
education.Discovery Channel
Communications Inc.Bethesda MD
20814—3579
www.discoveryschool.com
Acknowledgement
Write a paragraph about people you want
to thank and their contributions to your
project.
CA Standards
Copy Standards 1, 2, 9
Type only the standards related to your
project.
Pictures( Constructing and
Testing)
Glossary( Alphabetical)
Force
Newton
Net force
Unbalanced force
Balance force
Acceleration
Friction
Air resistance
Weight
Gravity
Motion
Reference point
Vector
Displacement
Slope
Average speed
Instantaneous speed
Work
Energy
Mass
Free fall
Projectile
Area
Velocity
Speed
Distance
Time
Kinetic energy
Acceleration due to gravity
Potential energy
Law of Conservation of energy
Gravitational potential energy
Mechanical energy
Elastic Potential Energy
Abstract
1st Paragraph – Purpose and some vital
introductory information
2nd Paragraph- Hypothesis ,Materials and
Experimental Procedures
3rd Paragraph- Variables, Explanation of
how data is measured, Explain the data
table
4th Paragraph- Analysis and Conclusion
Table of Contents
I.
II.
III.
IV.
Abstract
Purpose
Hypothesis
Experimental
Materials
Procedures
V. Variables
VI. Data Tables
VII. Graphs
VIII. Pictures
IX. Formula
X. Computation
XI. Analysis and
Conclusion
XII. Acknowledgement
XIII. Glossary
XIV. Bibliography
XV. CA Standards
Roller Coaster Design
I.
II.
Cover Page – 5pts
Purpose : To construct a 3-5 loops roller
coaster that will allow 3 different
marbles of different mass to roll down
and complete the loops from start to
finish at a speed of 5m/sec.
III. Introductory Information (10 paragraphs)
Purpose, roller coaster design
Motion, speed, velocity, acceleration
Kinetic Energy
Potential energy , Law of Conservation of
Energy
Gravity
Weight
Mass
Free fall
Newton’s Laws of Motion, Acceleration due to
gravity
Work
IV. Hypothesis: If … then….
V. Experimental:
a. Materials
b. Procedures
c. Variables
VI. Detailed Drawing with measurements
VII. Computations : 5 pts
VIII. Data Table 10 pts
IX. Graph 5 pts ( Mass vs Speed)
X. Analysis and Conclusion 10 pts
XI. Bibliography
XII. Acknowledgements
XIII. Daily Log
Abstract
The project is about designing a a 3-5
loops roller coaster that will allow a 5g
marble to roll down at a speed of at least
5 m/s. This study will also compare the
effect of marbles with different masses
on the marbles’ individual speed.
My hypothesis is that speed of the
marble is affected by the beginning
height of the roller coaster.
The first step is to draw the architecture of the roller
coaster. The beginning height should be higher than the
first loop. I did a research about kinetic energy , potential
energy , gravity , free fall and weight .The next step is to
prepare a list of all materials which includes pipe
insulation, glue and wood to support the roller coaster.
After I bought all the materials, I tried my initial design , if
the marble rolls completely from start to finish. When the
marbles did not roll completely the whole track,
adjustments were made on the height and the diameter
of the loops. Then I worked on and made sure that the
support are rigid and strong enough to hold up the roller
coaster. I made necessary calculations for the speed of
the marble using the kinetic energy , potential energy and
the law of conservation of energy formulas.
I therefore conclude that , height of the starting point
and the loops affect the speed of the marble.
Hypothesis
 If the succeeding loops are lower than
the starting point and previous loops then
the marble will complete the tract from
start to finish.
 If the starting point of the roller coaster is
_______m high then the marble will roll
at a speed of 5 m/sec.
Experimental
Materials:
Books
Computer
Log book
Display board
Printer
Supplies
Wood
Popsicle sticks
Triple beam balance
Marbles
Pipe insulation
Glue
Tools
Catch box
Toys
Meter stick
timer
Procedures:
1. Gather all materials.
2. Draw your 2 roller coaster designs.
3. Measure the mass of the marbles in grams.
4. Convert/ Change the grams unit to kilograms.
5. Calculate the height requirement of the roller coaster
using Energy formulas.
6. Prepare the base board.
7. Cut the pipe insulation into half making an open track.
8. Build the roller coaster using the calculated height. Use
_________ to support the track.
9. Loops should be smaller than the previous loops .
10. Test if the marbles complete the track. If the marble just
stall, re-adjust the roller coaster track.
11. Test the ordinary marble and measure the time
from start to finish in seconds.
Record it in Data Table 1.
12. Repeat step 11 three times and calculate
average time for the marble. Record in Data
Table1
13. Repeat procedures 11-12 for steel marble and
cork marble.
14. Calculate the speed of the three marbles using
V= d / t and record in Data Table 2.
DATA TABLE 1 - Mass
Marbles
Ordinary
Steel
Mass in g
Mass in kg
DATA TABLE 2
Marbles
Ordinary
Steel
Time
Trial1
Time
Trial2
Time
Trial3
Average
Time
DATA TABLE 3- Speed
Marbles
Ordinary
Steel
Cork
Speed, V= d / t
Graph
Graph 1 : Mass VS. Ave Time
Graph 2: Mass VS. Ave Speed
Analysis and Conclusion
Guide Questions:
1. What Law affects the roller coaster design?
2. What is the effect of the starting point or stop
height with the speed of the marble?
3. What happens to the PE and KE as the marble
goes down the track?
4. What makes the roller coaster work?
5. Does the mass of the marble affect the elapsed
time of the marbles? Explain
6. Does the mass of the marble affect the speed of
the marbles? Explain
Bibliography:
You should have at least 3 sources:
Books:
Title, Authors, Edition, Publishing Company,
Date of Publication, pages
Web:
Sponsor of the Web site, Web Address,
Author, title of the page, Date of Information,
Date when the information was taken.
Acknowledgement
Write a paragraph about people you want
to thank and their contributions to your
project.
CA Standards
Copy Standards 1, 2, 9
Type only the standards related to your
project.
Pictures( Constructing and
Testing)
Glossary( Alphabetical)
Force
Newton
Net force
Unbalanced force
Balance force
Acceleration
Friction
Air resistance
Weight
Gravity
Motion
Reference point
Vector
Displacement
Slope
Average speed
Instantaneous speed
Work
Energy
Mass
Free fall
Projectile
Area
Velocity
Speed
Distance
Time
Kinetic energy
Acceleration due to gravity
Potential energy
Law of Conservation of energy
Gravitational potential energy
Mechanical energy
Elastic Potential Energy
Inertia
Momentum
Law of Conservation of Momentum
Abstract
1st Paragraph – Purpose and some vital
introductory information
2nd Paragraph- Hypothesis ,Materials and
Experimental Procedures
3rd Paragraph- Variables, Explanation of
how data is measured, Explain the data
table
4th Paragraph- Analysis and Conclusion
Quiz # 2
1.
2.
3.
4.
5.
6. What is the purpose of the
What is a force?
seatbelt to the passenger
What is the unit of force?
when the car suddenly
stops?
What is Newton’s 1st law of
Motion?
7. What is the difference of
mass and weight?
What is Newton’s 2nd law of
Motion?
8. What is the equation of
force according to the 2nd
What is the speed of the
law of Newton?
passenger inside the
moving car?
9. What is the equation to
calculate weight?
10. What is the numerical
value of g or gravitational
acceleration ?
Part 2:
Calculate the total force
or Fnet.
F1= 20 N
F1=10N
F2= 20N
F3 = 30 N
F2 = 10 N
Part 3: Problem Solving
1. What is the net force on a 500 kg
elevator car accelerating at 200 m/sec?
2. What net force is needed to accelerate a
55 kg cart at 15 m/s2?
Definitions
Identify the words
1.
2.
3.
4.
5.
6.
7.
8.
Instrument used to measure angles
Two equal opposite forces
North, East , South , West
Change of speed
Change of direction
An object at rest will remain at rest and an object in
motion will move in its constant motion unless acted
upon by an unbalanced force
Unit of force
A push or a pull
9. Force directed to the left or right
10. Increase in speed
11. Decrease in speed
12. 9.8 m/s2
13. Opposing force which depends on the weight and
the type of surface
14. Wind opposing fall
15. Something thrown
16. Curved motion
17. Path of the projectile
18. Total amount of forces acting on an object
19. Mass X acceleration
20. Force that changes the object’s motion.
Objectives:
Describe the space Program
Differentiate the roles of space shuttle and space
stations.
Identify features of space probes.
Describe the condition of space compared to
earth
Identify the benefits of the space program
Identify the uses of satellites orbiting the earth
June 9-13, 2008
Monday: Roller Coaster Projects:
Model
Technical paper
Display
Rocket Science p 507
Tuesday: Sec 2 Assessment p 514, p 519
Wednesday: Sec 2 Assessment p 524
Notes Big Idea p 528
Thursday: Review and Assessment p 529
Standards Practice p 531
Friday: Communication Satellites p 527