PGNHS – Dulangan
School Grade Level 9
DAILY Extension
LESSON Teacher Mrs. Jennifer B. Magango Learning Area Science
LOG Teaching Date January 25, 2019
Quarter 4th Quarter
and Time (10:40-11:40)
FRIDAY
I. OBJECTIVES
A. Content Standard The Learners demonstrate an understanding of projectile motion,
impulse and momentum, and conservation of linear momentum
B. Performance Standards The Learners shall be able to propose ways to enhance sports related to
projectile motion
C. Learning Competencies & Code 1. define momentum
2. identify and explain the factors that affect momentum
3. solve problems involving momentum.
II. CONTENT MOMENTUM
III. LEARNING RESOURCES
A. References
1. Teaching Guide
2. Leaners’ Material/ Textbook pp. 256-260
3. Additional Materials from LR
portal
B. Other Learning Resources
IV. PROCEDURES
A. Reviewing previous lesson or ELICIT: True or False
presenting the new lesson If the statement is true say PAK, if the statement is false say GANERN.
1. A body that maintains a constant change in its velocity in a given
time interval has a uniform acceleration.
2. An object at rest has a negative velocity.
3. In Earth, when you throw something up, it will go down.
4. Free fall is the motion of an object with an acceleration due to
gravitational force.
5. When there is air resistance, the ball and the feather will drop at
the same time.
B. Establishing a purpose for the lesson ENGAGE:
C. Presenting examples/ instances of A. Let students share their ideas for the following questions.
the new lesson 1. What do you do when you are at the peak of your study or
you’re doing something then suddenly your parent called
you?
- Do you immediately respond to your mother’s call,
honestly?
2. Imagine that you are running as fast as you can but didn’t
notice that someone is just few inches away from you. What
will happen?
- Did you find difficulty stopping?
What you have experienced is called MOMENTUM.
3. What is momentum?
(Allow students to share their ideas about momentum before
giving the accurate definition)
B. Watch the Video of the tale of Momentum and Inertia (1:10
minutes)
1. Pause the video and ask the student, “Do you think
ROCKMAN will be able to stop the big rock?”
(answers may vary)
2. Continue playing the video for the student to see what
happened next.
“What difficulties did he encounter in stopping the big
rock?”
D. Discussing new concepts and EXPLORE: Identifying the factors affecting momentum
practicing new skills #1
E. Discussing new concepts and ACTIVITY 1: STOP! LOOK! & UNDERSTAND!
practicing new skills #2 1. Prepare a table in the middle of the class which will serve as
mini race track.
2. Present 2 toy cars (having the same mass) to the students and
a long stick.
3. Position the toy cars and the stick with a 12 inches distance in
between.
4. One car will move faster than the other towards the stick.
5. Ask students to observe.
6. Ask:
“Which of the two cars had difficulty in stopping?”
Which has greater momentum?
“What do you think is the factor that affected the
momentum of the cars?
ACTIVITY 2: ROLL, ROLL, ROLL the BALL
1. Using the same table, position an inclined plane 18 inches long.
2. Show 2 kinds of ball having different mass and a book.
3. Place the book opposite the inclined plane having a distance of
5 inches from the bottom edge.
4. Put the 2 ball at the peak of the plane and let it roll down.
5. Ask the student to observe what will happen to the ball.
Using the responses of the students from the activity, the teacher
will be able to begin discussing the factors affecting momentum and
its mathematical representation.
Present examples of calculation of momentum, velocity and mass.
F. Developing mastery (leads to EXPLAIN:
Formative Assessment) ACTIVITY: AM I GREAT-er?
1. Present situations to the students comparing momentum of 2
moving objects.
2. Stating which has a greater momentum will be based on the
factors which are velocity and mass, as well as, computational
value of momentum.
G. Finding practical applications of ELABORATE:
concepts and skills in daily living FIX MY SKILLS: Solve the following problems involving
momentum.
Group Activity:
1. A 2250 kg pickup truck has a velocity of 25 m/s to the east.
What is the momentum of the truck?
2. The parking brake on a 1200 kg automobile has broken, and the
vehicle has reached a momentum of 7800 kg.m/s. What is the
velocity of the vehicle?
3. A dart gun generates a dart with 140 kg.m/s momentum and a
velocity of 4 m/s. What is the mass of the dart in kilograms?
SUMMARY OF THE LESSON
Ask students the following question for them to be able to summarize the
lesson.
1. What is Momentum?
2. What are the factors affecting momentum? How do these
two factors affect momentum?
H. Making generalizations and
3. How do we calculate the momentum of an object?
abstractions about the lesson
Momentum is the measure of how difficult it is to stop a moving object
and can be expressed mathematically as p=mv since mass and velocity
are the 2 factors affecting momentum. The greater the mass or velocity,
the greater the momentum a moving object has.
EVALUATE:
Choose the letter of the correct answer.
1. Which of the following is referred to as a measure of how difficult
it is to stop a moving object?
a. momentum
b. mass
c. impulse
d. velocity
2. Which of the following factors affect momentum?
a. gravity and acceleration
b. mass and velocity
c. velocity and acceleration
I. Evaluating learning d. mass and acceleration
3. Which has more momentum: a huge truck that is not moving or
a small toy cart that is rolling?
a. the huge truck because it isn’t moving
b. the small car because of is lighter than the huge truck
c. the small car because it has mass and velocity
d. the huge truck because it is heavier than the car.
4. A bowling ball whose mass is 4 kg is rolling at a rate of 2.5 m/s.
What is its momentum?
a. 10 kg.m/s
b. 20 kg.m/s
c. 25 kg.m/s
d. 30 kg.m/s
5. A skateboard is rolling at a velocity of 3m/s with a momentum of
6kg.m/s. What is its mass?
a. 1 kg
b. 2 kg
c. 4 kg
d. 6 kg
J. Additional activities for application or EXTEND:
remediation DIRECTIONS: Given the following data, solve for momentum using the
formula p=mv.
Refer to your Science LM p259.
V. REMARKS
VI. REFLECTION
Prepared by:
Checked by:
HERBERT J. MAGANGO LOIDA P. VILLAS
Subject Teacher Principal IV
