Transcript Newton Laws of Motionx

Force
DO NOW: Make a table and write definitions
Type of
Forces
DEFINITION
ILLUSTRATION
Force
changes the shape or the movement of an
object. Unit of measurement is Newton.
DRAW A
PICTURE
AFTER THE
VIDEO
Friction
slows down objects when they rub against each
other.
Inertia
resistance to any change in motion.
Gravity
The force that attracts a body toward the center
of the earth, or toward any other physical body
having mass
WHAT IS FORCE?
http://studyjams.scholastic.com/studyjams/jams
/science/forces-and-motion/force-andmotion.htm
Performance: Jigsaw Groups
Materials: textbook and journals, GROUPS
rubric
Procedure:
 Group 1: Read page 107 and do question 1
 Group 2: Read page 108 and do question 2
 Group 3: Read page 108 and do question 3
 Group 4: Read page 108 and do question 4
DO NOW:
 What
connection can you make on how
gravity and your location (for example,
compare the moon and Earth’s gravity) can
affect force and inertia? Use your
definition and understanding of the terms
force, gravity, and inertia to support your
conclusion.
Newton’s law of gravity

https://www.youtube.com/watch?v=suQDwZcnJdg
Newton's universal law of gravitation is a
physical law that describes the attraction
between two objects with mass.
DO NOW: Make a table and write definitions
Type of
Forces
DEFINITION
ILLUSTRATION
Force
A push or pull. It changes the shape or the movement of
an object. Unit of measurement is Newton.
DRAW A PICTURE
AFTER THE VIDEO
Friction
slows down objects when they rub against each other.
Inertia
resistance to any change in motion.
Gravity
The force that attracts a body
toward the center of the earth, or
toward any other physical body
having mass
Discussion: Newton’s First Law
First Law
An object will remain in
rest or in motion unless a
force is applied
https://www.youtube.com/w
atch?v=sabH4bJsxWA
Performance: Popcorn Reading

People Search

What is a force and give 3 examples.

What are contact forces and noncontact forces.
Give an example of one contact force and one
noncontact force.

Imagine you are riding in a car. What forces are
acting on you and the car?
OBJECTIVES
 Explain
that gravity accelerates all
falling objects at the same rate in the
absence of air resistance
DO NOW: JOURNAL WRITING

READ THE HANDOUT “MORE DRAWING CONCLUSIONS

IN YOUR JOURNALS
 Answer
 When
the question from the handout
you are finish:
 Take
out your homework handout on “Gravity” and
read a book
Discussion: Jigsaw Groups
Materials: homework “Gravity”, GROUPS rubric
Procedure:
STEP 1: POPCORN READING BY THE CLASS
STEP 2: GROUPS WILL ANSWER THE FOLLOWING QUESTIONS

Group 1: questions 1 and 2

Group 2: questions 2 and 3

Group 3: questions 4 and 5

Group 4: questions 5 and 6
 Group
5: questions 6 and 7
STEP 3: Call on groups for questions and answers
PERFORMANCE: POPCORN READING
Turn
to Pages 113-114 in your
workbooks
DO NOW: FOUR CORNERS
1.
What will you need to kick a soccer
ball?
A. Friction
B. Force
C. Gravity
D. Inertia
DO NOW: FOUR CORNERS
Your older brother tells you his airplane has inertia.
What does this mean?
A.
B.
C.
D.
It has too much resistance to fly more than a
few feet from his hand
It is too heavy to stay in the air more than a
few seconds.
It will require a lot of force to get it to fly
It will stay in flight unless something stops it ,
or continue to stay still unless something
moves it.
FOUR CORNERS
What is an example of friction?
A.
Slipping on a patch of ice
B.
Dropping a book on the floor
C.
Diving into a pool
D.
Wind blowing against you as you walk
Discussion: What forces are on present
on a car as it is being driven?
Performance: Scientific Investigation
Question:
How can I make this toy
car move?”
Hypothesis:
My hypothesis is……
Experiment

Materials: toy car, string, ruler, pencils, lab
journal

Procedure (do not write the following as YOUR
procedure. Your group will decide and write
your OWN for this experiment):
1.
Material Manager—gather materials
2.
With your group, discuss how you will set up and
design your experiment
3.
List your steps (procedure) that you will carry out
or perform
Observation and Results
 Perform
the experiment according to your
plan
 Write
down what you observed in
OBSERVATION AND RESULTS
TRANSFER: Conclusion
• Explain whether your hypothesis was
correct or incorrect and why.
• Discuss which forces you observed that
acted on the car.
• Explain whether this experiment could be
improved and what you would do to
improve it.
HOMEWORK: DRAWING CONCLUSIONS
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HOMEWORK
 Read
Textbook page 109. Answer
Question 5 on page 109.
DO NOW: People Search
1.
What forces are acting on you and your
car as you travel?
2.
What does it mean when you “accelerate”
as you drive a car or ride a bike?
3.
Give an example of acceleration you have
experience. What is speed and give 2
examples.
DO NOW: Read page 102
 Journal
Writing
 How is distance and time related to
average speed?
Objective
 Compare,
calculate, and graph the average
speeds of objects in motion using both the
metric and U.S. System units.
Discussion
 Popcorn
Reading page 102.
Performance: Jigsaw Groups
Jigsaw Groups (workbook pp. 102-104)
1.Students will break into expert groups to
read, discuss, and answer assigned
questions.
2.Students will reconvene with original
groups and peer teach new information
gained.
3.GROUP Rubric (see attached)
Jigsaw Groups
 EVERY
group MUST Read page 102 on “Average Speed”
 Row
1/Table A: Page 102, Problem 3. Write three facts
that support the conclusion that an object’s speed can be
measured in meters per second
 Row
2/Table B: Page 102, Problem 4.
 Row
3/Table C: Page 102, problem 5.
 Row
4/Table D: page 103, problem 6.
 U-Table/Library:
page 104, problem 7, Draw graph on
that page. Read its title and labels and describe what it
shows.
Discussion: Journal Writing
1.
What is the average speed of a truck
driving on Highway 10 if it traveled west
for 240 miles for 3 hours?
2.
If the speed limit is 70 mph (miles per
hour) was it possible that the driver was
speeding or over the speed limit?
TRANSFER: FOUR CORNERS
What is an example of friction?
A.
Slipping on a patch of ice
B.
Dropping a book on the floor
C.
Diving into a pool
D.
Wind blowing against you as you walk
Objective
1.Students will discuss and explain
Newton’s first and second law of
motion.
2.Students will define the equation for
force (F = ma) and apply the equation
for calculations.
Agenda: Objective
1.Students will discuss and explain
Newton’s first and second law of
motion.
2.Students will demonstrate how mass
affects the force of a falling object
Do Now: Newton’s Laws of Motion
KWL
Students will
watch a short
introductory video
on “Force and
Motion.”
Discussion: Newton’s Second Law of
Motion
Who would have more force?
A pick-up truck with a mass of
4000 kilograms going 25 mph
or a sports car with a mass of
2000 kilograms 200 mph?
Explain your answer.
Gravitational Force
 Gravity
accelerates all falling objects at
the same rate in the absence of wind
resistance.
 Rate:
9.8 m/s2 (read as meter per seconds
squared)
 Force
= mass times acceleration
What is the force of a 5 kg ball falling
from a 10-story building?
Performance: Scientific Investigation.
Name
and date
Question: “How does the mass
affects the force acted upon a falling
object”
 Write your hypothesis
Experiment
 Materials:
rocks of different mass, flour, container,
ruler.
 Procedures:
1. Students
will drop the two objects of different masses
into a dish of flour,
2. Students will observe and explain how different the
force of impact for each object was, based on the
crater made in the flour by each one.
Write down what you observed in
OBSERVATION AND RESULTS
Objective
1.Students will discuss and explain
Newton’s second law of motion.
2.Students will demonstrate how mass
affects the force of a falling object
Transfer: Conclusion
• Explain whether your hypothesis was
correct or incorrect and why.
• Discuss what happen to the flour as the
rocks of different mass was dropped.
• Explain whether this experiment could be
improved and what you would do to improve
it.
Objective
1. Students will discuss and explain
Newton’s third law of motion.
2. Demonstrate a change in speed or
direction of an object’s motion with the
use of unbalanced forces
Do Now: Newton’s Third Law
For every reaction, there is a equal and
opposite reaction
Think, Pair, Share
Practice:
1. Identify the following pictures as
either Balanced or Unbalanced forces
2. If unbalanced, explain the direction
of the force and explain why