Name of Teacher: MARIA PIA W. SIBAYAN
Grade/Year Level: 9
Learning area: SCIENCE (PHYSICS)
Quarter: 4
Learning Competency: Describe how mass and velocity affect the momentum of an
object.
Unit 4
Topic: Momentum
Duration of session: 60 minutes
(Module 1)
At the end of the period, the students should be able to:
a. Compare the momentum of two toy cars used in activity.
Learning
b. Determine the factors affecting the momentum of an object.
objectives
c. Elaborate some examples and ways to prevent injuries that are
installed in devices and vehicles.
Resources
Instructional Materials; Cartolina, Manila Paper
References
Elements of
the Plan
Priming
Grade 9 learners’ module
Methodology


Teacher’s Activity
Prayer
Checking of attendance
Students’ Activity

Housekeeping
“Rebus”
1. I am the first in Myanmar, but last
in Vietnam, what am I?
2. I am a letter that shaped like a
circle, what am I?
3. The most important woman/girl
in your life starts and ends with
this letter, what am I?
Motivation
4. I am found at the tip of your nose
but found first on your eyes and
ears, what am I?
5. I am first in nuts, but I am the last
in bean. What am I?
6. I am first when I am the teacher
but last when I am the student.
What am I?
7. I am always before Vee but
always after Tea. What am I?
8. I am the first in man but only
found third in woman. What am
I?
ACTIVITY
Analysis
The students will answer
M,O,M,E,N,T,U, M
“Investigating Momentum”
Given their modules, the learners are
asked to follow the procedures, do
The student will perform the
what is written and answer the guide
activity
questions. After doing the activity, the
students are task to present their output
in front of the class.
Based on your activity, what makes the Force acting on the object
object move?
Which of the two objects have greater
force?
If the bigger car has the greater force,
how about the speed of the two
objects?
If they are moving with the same
speed, why do the other object (the
bigger one) continue to move while
the other one suddenly stop?
Considering two cars (the bigger and
the smaller one) moving at the same
velocity then suddenly lose their breaks
and crashed against the wall, which
do you think is difficult to stop?
What do you think?
Why?
Which do you think is safer to ride with?
They are just moving with the same
speed.
Because the bigger car is heavier
than that of the smaller one.
The truck
The truck has greater force.
It has greater mass.
The truck
Why?
It is less damaging than the smaller
car.
Which of the two object has greater
acceleration?
The car
Why?
It has lesser mass compared to the
truck.
What law of motion is consistent with it?
Abstraction
The bigger Car
Why?
What do you call the quantity in
physics which is defined as “mass in
motion”?
What is the formula for momentum?
Based on the equation, what are the
factors that affect momentum?
Using the formula P=mv, what will be
the derived formula of mass?
What does this equation mean?
How about velocity? What will be the
derived formula?
Law of acceleration
F=ma, so the greater mass the
greater the force but lesser the
acceleration.
MOMENTUM
P=mv
Mass and velocity
m=P/v
mass is directly proportional to
momentum but inversely
proportional to the velocity of an
object.
V=p/m
What does this imply?
To generalized, on what two factors
depend on? How does momentum
affect?
1. What is the momentum of a 23
kg cannon shell going 530m/s?
2. What speed must a 5kg object
go to have 24kg m/s of
momentum?
3. A bullet going 640m/s has 42 kg
m/s of momentum. What is its
mass?
4. Calculate the momentum when
a 10 kg object move with a
speed of 5 m’s
5. A 200 kg man moving with a
speed of 1 meter/second has
the same momentum as a smart
car moving with a speed of 0.25
m/s. how much does the smart
car weight in pounds?
Application
6. A ball having 2kg mass and 6
m/s velocity moves to the east.
Calculate the momentum.
7. A car having 15 m/s velocity
1500 kg mass move to the north.
8. A child having mass 25kg and
velocity 2 m/s moves to the west
9. A 325 kg motorcycle is moving at
140km/h, south. A) find its
momentum. B) at what velocity is
the momentum of a 1754 kg car
equal to that of the motorcycle?
10. Initially a soccer ball is going
23.5m/s, south. In the end, it is
travelling at 3.8 m/s, south. The
ball’s change in the momentum
is 17.24 kg m/s, north Find the
ball’s mass.
Velocity is inversely proportional to
the mass but directly proportional
to momentum.
Mass and velocity, if we increase
the mass of an object the
momentum also increases, the
same as through with the velocity.