The document covers the concepts of balanced and unbalanced forces, educating learners on how forces impact the movement of objects. It outlines learning objectives, key definitions, examples, and question prompts for evaluating understanding. The content emphasizes the difference between balanced forces, which result in no net movement, and unbalanced forces, which cause changes in motion.

2. SCIENCE 7
Balanced and
unbalanced forces

3. Balanced and unbalanced forces
CONTENT
The learners learn that Scientists and engineers
analyze forces to predict their effects on
movement.
LEARNING
STANDARD
The learners will identify that forces act between
objects and can be measured.
LEARNING
COMPETENCY

4. By the end of the lesson, the 80 percent of
the learners will be able to:
1. Distinguish between balanced and unbalanced
forces.
2. Explain the effects of balanced and unbalanced
forces on the motion of objects.
3. Appreciate the role of balanced and unbalanced
forces in everyday life by answering the reflection of
learning.
OBJECTIVES

5. I. Activating Prior Knowledge
Short Review
The students will identify the what type of forces.
I. Activating Prior Knowledge
GRAVITATIONAL
FORCE

6. I. Activating Prior Knowledge
Short Review
The students will identify the what type of forces.
I. Activating Prior Knowledge
FRICTIONAL
FORCE

7. I. Activating Prior Knowledge
Short Review
The students will identify the what type of forces.
I. Activating Prior Knowledge
TENSION
FORCE

8. I. Activating Prior Knowledge
Short Review
The students will identify the what type of forces.
I. Activating Prior Knowledge
ELECTROSTATIC
FORCE

9. I. Activating Prior Knowledge
Short Review
The students will identify the what type of forces.
I. Activating Prior Knowledge
APPLIED
FORCE

10. 1. Distinguish between balanced and unbalanced
forces.
2. Explain the effects of balanced and unbalanced
forces on the motion of objects.
3. Appreciate the role of balanced and unbalanced
forces in everyday life by answering the reflection of
learning.
B. Establishing Purpose of the Lesson
1. LESSON PURPOSE

11. B. Establishing Purpose of the Lesson
2. Unlocking Content Vocabulary: Match Type Activity
CONTACT
FORCE
NON-CONTACT
FORCE
BALANCED
FORCES
Forces that are equal in strength and
opposite in direction, resulting in no net
force on an object.
Forces that act on an object without
physical contact, such as gravity or
magnetism.
Forces that act on an object through direct
physical contact, such as friction or normal
force.
FORCE
A push or pull that can cause an object to
change its speed, direction, or shape.

12. Balance Forces
 When the forces acting
on an object are equal in
magnitude and opposite
in direction, the forces
are considered
balanced.
Balanced and unbalanced forces
C. Developing and Deepening Understanding

13.  Suppose you are
pushing a wall, and as
expected, the wall does
not move and neither do
you. It means that you
and the wall are exerting
a balanced force on
each other.
Balanced Forces Examples
C. Developing and Deepening Understanding

14.  The image shows a game
of tug of war between
equally matched
opponents. Neither of the
participating teams can
pull the other team
towards themselves due
to balanced forces.
Balanced Forces Examples
C. Developing and Deepening Understanding

15.  The image below shows a book resting on a table
(the force of gravity is balanced by the force
exerted by the table)
Balanced Forces Examples
C. Developing and Deepening Understanding

16. Balance Forces
 When the forces acting on
an object are balanced, it
means the net force on the
object is zero. The forces
are equal in magnitude and
opposite in direction, so
they cancel each other out.
Balanced Forces Examples
C. Developing and Deepening Understanding

17. Balance Forces
 For an object at rest, balanced
forces mean the object will
remain at rest. The forces acting
on it, such as the force of gravity
and the normal force from a
surface, are equal and opposite,
so the object does not accelerate
and remains stationary.
Balanced Forces Examples
C. Developing and Deepening Understanding

18. Balance Forces
 For an object in motion, balanced
forces mean the object will
continue moving at a constant
velocity. If the forces acting on the
object, such as air resistance and
the force propelling it forward, are
balanced, the object will not speed
up, slow down, or change
direction. It will maintain its current
speed and trajectory.
Balanced Forces Examples
C. Developing and Deepening Understanding

19. Balance Forces
 The key point is that balanced forces result in no change to an
object's motion. The object will either stay at rest or continue
moving at a constant velocity, as long as the forces acting on it
remain balanced.
Balanced and unbalanced forces
C. Developing and Deepening Understanding

20. Unbalance Forces
 When the resultant force
acting on a body is not equal
to zero, the forces acting on
the body are known as
unbalanced forces. The body
acted upon by unbalanced
forces changes its state of
motion.
Balanced and unbalanced forces
C. Developing and Deepening Understanding

21. Unbalance Forces
 When the resultant force
acting on a body is not equal
to zero, the forces acting on
the body are known as
unbalanced forces. The body
acted upon by unbalanced
forces changes its state of
motion.
Balanced and unbalanced forces
C. Developing and Deepening Understanding

22. Unbalance Forces
 Practically anything that
moves is a result of the
exertion of unbalanced forces
on it. If you kick a football and
it moves from one place to
another, it means that the
unbalanced troops are acting
upon it.
Unbalanced Forces Examples
C. Developing and Deepening Understanding

23. Unbalance Forces
 The image shows two people
on a seesaw. The person on
the right is significantly heavier
than the person on the left, and
the seesaw is effectively tilted
towards him. This is an
example of unbalanced forces.
Unbalanced Forces Examples
C. Developing and Deepening Understanding

24. Differences Between Balanced and Unbalanced Forces
C. Developing and Deepening Understanding
Balanced Forces Unbalanced Forces
The forces are equal in
magnitude
The forces are unequal in
magnitude
It does not cause any
change in the state of
motion of the object.
Causes change in the state
of motion of the object.

25. C. Developing and Deepening Understanding
Worked Example
The students will identify if the given picture is balanced or
unbalance forces.
A book resting on a table
Balanced
Forces

26. C. Developing and Deepening Understanding
Worked Example
The students will identify if the given picture is balanced or
unbalance forces.
A person standing still
Balanced
Forces

27. C. Developing and Deepening Understanding
Worked Example
The students will identify if the given picture is balanced or
unbalance forces.
A book being pushed across a table
Unbalanced
Forces

28. C. Developing and Deepening Understanding
Worked Example
The students will identify if the given picture is balanced or
unbalance forces.
A car driving at a constant speed
Balanced
Forces

29. C. Developing and Deepening Understanding
Worked Example
The students will identify if the given picture is balanced or
unbalance forces.
A ball being kicked
Unbalanced
Forces

30. D. MAKING GENERALIZATION
Learners’ Takeaways
KWL Chart: Using the
graphic organizer, the
students will answer the
L column or what
they have learned about
the lesson.

31. D. MAKING GENERALIZATION
Reflection on Learning
1. What is the difference between balanced and
unbalanced forces?
2. Provide an example of balanced forces and explain
how they affect the motion of an object.
3. Provide an example of unbalanced forces and explain
how they affect the motion of an object.

32. E. EVALUATING LEARNING
E. EVALUATING LEARNING
E. EVALUATING LEARNING
_________ 1. What is the definition of
balanced forces?
a) Forces that are equal in magnitude and
opposite in direction
b) Forces that are not equal in magnitude
and/or not opposite in direction
c) Forces that result in a change in motion
d) Forces that cause an object to accelerate

33. E. EVALUATING LEARNING
E. EVALUATING LEARNING
E. EVALUATING LEARNING
_________ 2. Which of the following is an
example of balanced forces?
a) A book being pushed across a table
b) A ball being kicked
c) A book resting on a table
d) A car accelerating from a stop

34. E. EVALUATING LEARNING
E. EVALUATING LEARNING
E. EVALUATING LEARNING
_________ 3. When forces are balanced, the
net force on an object is:
a) Greater than zero
b) Less than zero
c) Equal to zero
d) Constantly changing

35. E. EVALUATING LEARNING
E. EVALUATING LEARNING
E. EVALUATING LEARNING
_________ 4. What is the result of balanced
forces acting on an object?
a) The object remains at rest or continues
moving at a constant velocity
b) The object accelerates
c) The object decelerates
d) The object changes direction

36. E. EVALUATING LEARNING
E. EVALUATING LEARNING
E. EVALUATING LEARNING
_________ 5. Which of the following is an
example of unbalanced forces?
a) A person standing still
b) A car driving at a constant speed
c) A box sitting on a frictionless surface
d) A skydiver falling through the air

37. E. EVALUATING LEARNING
E. EVALUATING LEARNING
E. EVALUATING LEARNING
_________ 6. When forces are unbalanced,
the object will:
a) Remain at rest
b) Continue moving at a constant velocity
c) Accelerate or decelerate
d) Change direction randomly

38. E. EVALUATING LEARNING
E. EVALUATING LEARNING
E. EVALUATING LEARNING
_________ 7. How do unbalanced forces
affect the motion of an object?
a) They have no effect on the object's
motion
b) They cause the object to remain at rest
c) They cause the object to move at a
constant velocity
d) They cause the object to change its
speed or direction

39. E. EVALUATING LEARNING
E. EVALUATING LEARNING
E. EVALUATING LEARNING
_________ 8. Which of the following is a
characteristic of balanced forces?
a) The net force is greater than zero
b) The object will accelerate
c) The object will change direction
d) The object will remain at rest or continue
moving at a constant velocity

40. E. EVALUATING LEARNING
E. EVALUATING LEARNING
E. EVALUATING LEARNING
_________ 9. In a tug-of-war game, the
forces exerted by the two teams are:
a) Balanced
b) Unbalanced
c) Constant
d) Random

41. E. EVALUATING LEARNING
E. EVALUATING LEARNING
E. EVALUATING LEARNING
_________ 10. Which of the following is
NOT a consequence of unbalanced forces?
a) The object remains at rest
b) The object accelerates or decelerates
c) The object changes direction
d) The object continues moving at a
constant velocity

42. E. EVALUATING LEARNING
E. EVALUATING LEARNING
E. EVALUATING LEARNING
1. a) Forces that are equal in magnitude and opposite in direction
2. c) A book resting on a table
3. c) Equal to zero
4. a) The object remains at rest or continues moving at a constant
velocity
5. d) A skydiver falling through the air
6. c) Accelerate or decelerate
7. d) They cause the object to change its speed or direction
8. d) The object will remain at rest or continue moving at a constant
velocity
9. b) Unbalanced
10. a) The object remains at rest
ANSWERS KEY

43. Reference :
•SCIENCE 7 LESSON EXEMPLAR
GCSE Physics Revision “Resolving Forces” Retrieved from
https://www.youtube.com/watch?
v=8RI2_gJy0L0&list=PL9IouNCPbCxUrQkFLoPwB67nDbhw2NfAO&in
dex=6 The Physics Classroom. Accessed from
https://www.physicsclassroom.com/Physics-Interactives/Newtons-
Laws/Free-Body
Diagrams/Free-Body-Diagram-Interactive
Ling, J.S., Sanny, J., & Moebs, B. (2016). University Physics Volume 1.
Retrieved from https://openstax.org/details/books/university
physics-volume-1
Hewitt, P.G. (2014). Conceptual physics. 12th Ed. Pearson
DepEd. (n.d). Project EASE: Integrated Science I Module 7.
https://byjus.com/physics/balanced-force/