G8 Week 2
G8 Week 2
G8 Week 2
II. CONTENT
FORCE, MOTION, AND ENERGY
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A. References
1. Teacher’s
Guide pages
2. Learner’s
Material pages
3. Textbook
pages
4. Additional
Materials for
Learning EASE Physics, Module 10. Lesson 3
Resources (LR)
Portal
B. Other Lesson Guide G8 First Quarter
Learning https://www.google.com.ph/search? pictures&oq=balanced+and+unbalanced+forces
Resources
IV. PROCEDURES
A. Reviewing the Test Proper
previous lesson Checking of test
or presenting the papers. What is inertia? Ask the students to restate the second
Recording of test Differentiating balanced and unbalanced How is the law of inertia related to law into a simple statement.
new lesson
Results. forces
mass?
Identifying least
learned and most
mastered skills.
B. Establishing a Let the students guess the word being Derivation of Formula:
purpose for the defined by solving the jumbled letters. Study the picture.
lesson Can a man push the car? From the statement that
1. It refers to the amount of matter an object How much force is needed by acceleration is directly proportional to
has. the man to push the car? force at constant mass.
A S S M
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Mathematically a=kF where nK =
mass (eq. 1)
2. It is a push or pull upon an object
resulting from the object’s
Acceleration also varies with mass. As
interaction with another object.
the mass of the object increases with
the same amount of force applied, its
R E C F O acceleration decreases thus:
a= k(1/m) where K=net force (eq.2)
Therefore α F/m
4. It is the resistance of any physical object
Mathematically, a = F/m
to any change in its state of motion.
where a= acceleration
I A E R I T N m= mass
F= force
C. Presenting The teacher will present two balls Give and discuss at least two examples
examples/ of different masses. Then ask the of situations/problems on the Law of
instances of the students which of the two balls will Acceleration
Are those sets of words familiar to you?
accelerate faster. Why? 1. A huge stone is pushed with 30 N of
new lesson
force. If there is only 5N of friction
What ideas came into your mind when you
and the stone’s mass is 88 kg. What is
met those words we had unscrambled?
the acceleration of the table?
Bowling ball
D. Discussing
new concepts and
practicing new 1. Differentiate the two balls in
skills #1 terms of mass. Which has the
The learners will analyze the picture of the greater mass?
two wrestlers by comparing their masses and Do the exercise in Lesson Guide G8
relating the concept of mass to inertia. 2. If an equal amount of force is First Quarter
applied to the two balls, which will
accelerate faster?
E. Discussing Do the activity on Inertia Do the activity on The Law of Presentation of the outcomes.
new concepts and Acceleration
practicing new
skills #2
F. Developing Questions:
mastery A. 1. What variable/s is/are said to Discuss the answers in the exercise
PART A. be constant in the activity? given.
2. What is the effect of varying
1. What happens when you slowly pull the the amount of force on the
cardboard? Explain. acceleration of the cart?
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3. What relationship exists
2. What happens when you flipped the between the force and acceleration
cardboard? Explain. when the mass of the cart is kept
constant?
PART B. B. 1. What variable/s is/are said to
be constant in the activity?
1. What happen to the remaining books after 2. What is the effect of varying
one book was pulled? Why is this so? the mass on the acceleration of the
cart?
2. Relate your observation to the concept of 3. What relationship exists
inertia. between the mass and acceleration
when the force is kept constant?
G. Finding Use the following examples to explain how Present the statement in the class Engineers at the Johnson Space Center
practical Newton's first law occurs in everyday “You may be bigger but I am must determine the net force needed
application of events: faster” for a rocket to achieve an acceleration
a. How does this line illustrate
concepts and of 70 m/s2. If the mass of the rocket is
a) The car suddenly stops and you strain Newton’s Second Law of Motion?
skills in daily against the seat belt. b. How is the statement related to 45,000 kg, how much net force must
living mass and acceleration? the rocket develop?
b) When riding a horse, the horse suddenly
stops and you fly over its
head.
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H. Making Mathematically, the second law of
generalizations motion can be expressed:
and abstractions
A = F/m
about the lesson
F = ma
M = F/a
1. State the second law of motion
Newton's first law states that an object at
2. How is acceleration related to the If the unit of F net is in Newton,
rest will stay at rest or an object in motion
object’s mass and the amount mass(m) is in kilogram (kg) and
will stay in motion and travel in a straight
of force exerted? acceleration is in meters per
line, as long as no external net force acts on
3. What relationship exists between second/second (m/s2)
it. The object will change its state of motion
acceleration and force; force
only if there is an unbalanced or net force
and mass? Since force is a vector quantity and
acting upon it. Inertia is measured in terms
4. How is the second law of motion mass is a scalar quantity, acceleration
of mass. An object having greater mass has
applied to everyday is also a vector quantity where
greater inertia
occurrences? acceleration follows the direction of
the net force
I. Evaluating Choose the best answer. Write a letter only. Direction: Read each statement Direction: Solve problems involving
learning carefully and write the letter of the the Law of acceleration then write the
1. According to Newton's First Law of best answer. letter of the correct answer.
Motion, 1. Which among the Newton’s
A. an object in motion eventually comes to a Laws of Motion states that force 1. What is the mass of a truck if it
stop. equals mass times acceleration? produces a force of 14,000N
rd
B. An object at rest eventually begins to A. 3 Law while accelerating at a rate of 5
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move. B. 1st Law m/s2?
C. An object at rest always remains at rest. *C. 2nd Law A. 280 kg
*D. An object at rest remains at rest unless D. all of the above *B. 2800kg
acted upon by a net force. C. 70,000kg
D. 7000kg
2. The greater the mass of an object, 2. According to Newton's 2nd Law
A. the easier the object starts moving. of Motion, force equals –
B. the more space it takes up. A. mass divided by acceleration 2. Which is the correct unit of
*C. the greater its inertia. B. mass plus acceleration acceleration?
D. the more balanced it is. C. mass subtract acceleration A. m/s
*D. mass times acceleration *B. m/s2
3. The tendency of an object to resist any C. kg.m/s
change in its motion is known as 3. How does the acceleration of an D. kg.m/N
A. balance. object change in relation to its
B. force mass? It is _________. 3. Suppose that a sled is accelerating
*C. inertia. A. directly proportional at a rate of 2m/s2. If the net force is
D. mass. *B. inversely proportional tripled and the mass is halved, what
C. acceleration doesn’t then is the new acceleration of the
4. The mass of the object is a quantitative depend on mass at all sled?
measure of its inertia stated law is newton's D. neither A or B A. decrease by half
*A. First law B. doubled
B. second law 4. Suppose a cart is being moved by *C. tripled
C. third law a force. If suddenly a load is D. quadrupled
D. fourth law dumped into the cart so that the
5. Which of the best describes the concept of cart’s mass doubles, what happens 4. Suppose a ball of mass 0.60 kg is
inertia? to the cart’s acceleration? hit with a force of 12 N. Its
A. A force that attracts objects with mass A. It quadruples. acceleration will be:
B. The tendency of an object to float in B. It doubles. *A. 20 m/s2
water *C. It halves. B. 40 m/s2
C. A force created when surfaces are in D. It quarters. C. 10 m/s2
contact D. 20 m/s
*D. The tendency of an object to resist a 5. Which will accelerate faster?
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5. If the ball in question no. 4 is
increased by 24 N, what is the
A. A 1000 tons truck
increased in acceleration?
B. A fully loaded bus
change in motion A. 20 m/s2
C. An overloaded jeepney
B. 30 m/s2
*D. A race car
*C. 4 0 m/s2
D. 50 m/s2
VI. REFLECTIONS
A. No. of learners
who earned 80%
in the evaluation
B. No. of learners
who require
additional
activities for the
remediation who
scored below
80%
C. Did the
remedial lessons
work? No. of
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learners who
have caught up
with the lesson
D. No. of learners
who continue to
require
remediation
E. Which of the
teaching
strategies worked
well? Why did
this work?
F. What
difficulties did I
encounter that
my principal or
supervisor can
help me solve?
G. What
innovation or
localized
materials did I
use/discover that
I wish to share
with other
teachers?
Prepared by:
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JONAS FELICIANO C. DOMINGO
PRIMELYN D. WAGAS Education Program Supervisor
Teacher I Officer-in-Charge
Office of the School Principal
Checked by:
VIRGINIA G. ABIERA
Assistant Principal II
Noted by:
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