Sliding Friction

1. Sliding Friction
Lesson 3

2. Sliding Friction
Lesson 3

4. Have you tried moving the cabinet
across the floor? The cabinet is at
rest until you push it. You must push
the cabinet from another angle or
different side. To stop the cabinet,
you must change the force again. You
must stop it from moving.
Sliding Friction
Lesson 3

5. What I Need To Know
After the lesson, you should be able to:
1. describe sliding friction; S6FE-IIIa-c-1
2. draw examples of sliding friction and
give short description about it; and
3. value the importance of sliding friction in
our everyday life.

6. What I Know
Pre-test: Multiple Choice
Directions: Read the questions carefully. Write the letter of your answer on
your Activity Notebook.
1. Which of the following statement best describes sliding friction?
A. It is the force between the surfaces of two solid objects that keeps the
objects from moving.
B. It is the force that occurs when two objects rub/slide against each other.
C. It is that opposes the motion of a wheel turning along a surface.
D. It is the force that occurs in objects moving through fluid.
2. What kind of friction occurs when more force is needed to pull or push an object?
A. Sliding Friction C. Rolling Friction B. Fluid Friction D. Static friction
3. The boy sits on the slippery mud. What force stops him from sliding down?
A. Gravity B. Weight C. Friction D. Magnetic Force
4. When you push the heavy box across the smooth floor. What friction is being
applied?
A. Fluid Friction B. Rolling Friction C. Static Friction D. Sliding Friction
5. What type of friction occurs when you push a block of wood through a
ramp?
A. Fluid Friction B. Sliding Friction C. Rolling Friction D. Static Friction

7. Pre-test: Multiple Choice
Directions: Read the questions carefully. Write the letter of your answer on
your Activity Notebook.
1. Which of the following statement best describes sliding friction?
A. It is the force between the surfaces of two solid objects that keeps the
objects from moving.
B. It is the force that occurs when two objects rub/slide against each other.
C. It is that opposes the motion of a wheel turning along a surface.
D. It is the force that occurs in objects moving through fluid.
2. What kind of friction occurs when more force is needed to pull or push an object?
A. Sliding Friction C. Rolling Friction B. Fluid Friction D. Static friction
3. The boy sits on the slippery mud. What force stops him from sliding down?
A. Gravity B. Weight C. Friction D. Magnetic Force
4. When you push the heavy box across the smooth floor. What friction is being
applied?
A. Fluid Friction B. Rolling Friction C. Static Friction D. Sliding Friction
5. What type of friction occurs when you push a block of wood through a
ramp?
A. Fluid Friction B. Sliding Friction C. Rolling Friction D. Static Friction

8. What’s In
Flash it back!
Directions: Write the key term that best completes each
sentence. Write your answer in your activity notebook.
1. Wheelchair racers move around the track is an example of
what type of friction? __________
2. Friction changes the energy of an object from kinetic energy
to __________.
3. __________ is a contact force that allows object’s motion
to slow or stop between the two surfaces that are touching.
4. Friction is a force that acts in the __________ direction of
the intended motion of an object.
5. __________ affects the motion of falling objects by acting
the force of gravity.
Heat opposite Friction Rolling Friction Air Friction

9. What’s In
1. Wheelchair racers move around the track is an example of
what type of friction? _____________
2. Friction changes the energy of an object from kinetic energy
to _________.
3. __________ is a contact force that allows object’s motion
to slow or stop between the two surfaces that are touching.
4. Friction is a force that acts in the __________ direction of
the intended motion of an object.
5. __________ affects the motion of falling objects by acting
the force of gravity.
Rolling Friction
heat
Friction
opposite
Air friction

10. What’s New
Friction in Basketball
Watching a basketball game is fun. You can see how intense the action is
inside the court, but have you imagined how friction occurs in this setting?

11. What’s New
Picture Analysis:
Why do you think basketball players wear shoes with rubber soles
instead of leather shoes? What do you think will happen if they will
wear leather shoes?

12. What Is It
Activity 1: Try this!
Material needed: book & table Procedure:
1. Place the book on the table and try to push it
using enough force to make it forward.

13. Question:
1. How can you move the books?
2. What will occur when you push the
books?

14. Conclusion: Make a conclusion based
on the given activity.
____________________________________________
____________________________________________
____________________________________________
____________________________________________
____________________________________________
____________________________________________
____________________________________________
____________________________________________
____________________________________________

15. Discussion:
When you push an object like a book
on the floor or table, sliding friction
occurs. Sliding friction occurs between two
surfaces that come in contact with each
other. Sliding friction acts in a direction
opposite the direction of motion.

16. In the case of a book, the book moves
forward while sliding friction is in the opposite
direction. Sliding friction slows down the
movement of the book or object that is moving.
This sliding friction prevents the object to
move forward as fast as it would. When sliding
friction is acting on an object, other forces
must be present to keep the object moving. It
could be a push or force of gravity when the
object moves in slope. Sliding Friction occurs
when two objects rub against each other or
slide against each other. It is caused by
molecular adhesion between surfaces.

17. SLIDING FRICTION

18. What’s More
Activity 2: Draw and Describe!
Directions: Draw examples of sliding friction and give short
description about each picture you have drawn. Use this
table below. Draw and write your answers in your activity
notebook
Example of Sliding Friction Description
1.
2.
Questions:
1. Based on your given example of sliding friction, when does this
friction occur?
2. In what way does sliding friction is important?
__________________________________

19. What I Have Learned
Directions: Fill in the blank with the correct word to
complete the concept learned. Choose the correct word from
the box below. Use your activity notebook in writing your
answer.
rub/slide Dry friction molecular adhesion motion opposite
Sliding Friction, also called ___________, occurs
when two objects __________ against each other.
It is caused by __________ between surfaces. In
addition, sliding friction acts in a direction
__________ the direction of __________.

20. What I Have Learned
Sliding Friction, also called ___________, occurs
when two objects __________ against each other.
It is caused by ________________ between
surfaces. In addition, sliding friction acts in a
direction __________ the direction of
__________.
Dry friction
Rub/slide
molecular adhesion
opposite
motion

21. What I Can Do
Activity 3: Modified True or False!
Directions: Write T if the statement is True and if the
statement is False, underline the words that make it false and
write your answers in your activity notebook.
_____1. Sliding friction occurs when two objects rub against
each other or slide against each other.
_____2. The greatest friction shows on a polished floor or
smooth surface.
_____3. More force is needed to pull the block of wood when
friction is greater.
_____4. Sliding Friction acts in a direction opposite the
direction of motion.
_____5. The rougher the surface, the faster an object will
move over the surface.

22. What I Can Do
Activity 3: Modified True or False!
Directions: Write T if the statement is True and if the
statement is False, underline the words that make it false and
write your answers in your activity notebook.
_____1. Sliding friction occurs when two objects rub against
each other or slide against each other.
_____2. The greatest friction shows on a polished floor or
smooth surface.
_____3. More force is needed to pull the block of wood when
friction is greater.
_____4. Sliding Friction acts in a direction opposite the
direction of motion.
_____5. The rougher the surface, the faster an object will
move over the surface.
T
T
T
rough
slower

23. What I Can Do
Activity 4: Cite the Importance
Directions: The statements below are examples of sliding
friction. Cite the importance of this, particularly in our
health. Write your answers in your activity notebook.
Example of Sliding Friction Importance/Benefit
1. Rubbing both hands together to
create heat
2. A rag and the counter being
used to clean and sanitize
surfaces

24. What I Can Do
Activity 4: Cite the Importance
Directions: The statements below are examples of sliding
friction. Cite the importance of this, particularly in our
health. Write your answers in your activity notebook.
Example of Sliding Friction Importance/Benefit
1. Rubbing both hands together to
create heat
It can relax tension out of the
face and can make us alert if you
feel asleep.
2. A rag and the counter being
used to clean and sanitize
surfaces
It can use to clean dirt. Using
sanitizer to wipe, it can wash
away germs and help eliminate
viruses and bacteria such as Covid
19.

25. Assessment
Multiple Choice: Read the questions below and choose the letter of the correct answer.
Write your answers in your journal/answer sheet.
1. What is sliding friction?
A. It occurs between two surfaces that come in contact with each other.
B. It occurs in stationary objects or objects at rest.
C. It occurs between moving objects and a liquid or between an object moving in the air.
D. It opposes the motion of the wheel turning along a surface.
2. What type of friction occurs when there is more force needed to travel an object in a
surface than rolling Friction?
A. Static Friction B. Fluid Friction C. Sliding Friction D. Air friction
3. The following statements are examples of sliding friction EXCEPT ONE. Which is it?
A. A block being slid across the floor C. A glass being pushed across the table
B. Jeans on your legs when putting it on D. When a train goes around
4. Which type of friction opposes the sliding of objects over a surface?
A. Static Friction B. Sliding Friction C. Fluid Friction D. Rolling Friction
5. Mucus produced by snails, help them move along the ground. How does the mucus help
snails move?
A. Mucus is cold. C. Mucus reduces friction.
B. Mucus leaves a trail. D. Mucus makes the snail lighter.

26. Assessment
Multiple Choice: Read the questions below and choose the letter of the correct answer.
Write your answers in your journal/answer sheet.
1. What is sliding friction?
A. It occurs between two surfaces that come in contact with each other.
B. It occurs in stationary objects or objects at rest.
C. It occurs between moving objects and a liquid or between an object moving in the air.
D. It opposes the motion of the wheel turning along a surface.
2. What type of friction occurs when there is more force needed to travel an object in a
surface than rolling Friction?
A. Static Friction B. Fluid Friction C. Sliding Friction D. Air friction
3. The following statements are examples of sliding friction EXCEPT ONE. Which is it?
A. A block being slid across the floor C. A glass being pushed across the table
B. Jeans on your legs when putting it on D. When a train goes around
4. Which type of friction opposes the sliding of objects over a surface?
A. Static Friction B. Sliding Friction C. Fluid Friction D. Rolling Friction
5. Mucus produced by snails, help them move along the ground. How does the mucus help
snails move?
A. Mucus is cold. C. Mucus reduces friction.
B. Mucus leaves a trail. D. Mucus makes the snail lighter.

27. Additional Activities
Directions: Look and list down five
examples of objects found at
home having Sliding friction.
1.
2.
3.
4.
5.