This document discusses work and energy. It defines work as force times displacement, and notes that work is done when a force causes an object to move in the direction of the force. The document provides examples of situations where work is and isn't done. It also discusses how work is calculated, and how work is related to energy, with the unit of work (joules) being the same as the unit of energy. Students are given practice problems to calculate work.

3. Prayer…
Attendance Checking…

7. Answer:
5
letters
Level 101

9. Answer:
6
letters
Level 102

11. Answer:
4
letters
Level 103

12. How is it related to ENERGY?

13. Content Standard:
The learners demonstrate an
understanding of work using
constant force, power,
gravitational potential energy,
kinetic energy, and elastic
potential energy.

14. Performance Standard:
The Learners shall be
able to develop a written
plan and implement a
Newton‘s Olympics.

15. Learning Areas:
The Learners should be able to:
identify situations in which work is done
and in which no work is done. (S8FE-Ic-20)
describe how work is related to power
and energy. (S8FE-Ic-21)

16. Contextualized and Localized:
Tell whether the situations shown
below represent examples of work
and identify the one doing the work
and on which object the work is
done.

17. Contextualized and Localized:
Calculate the work done by the carabao
in pulling the sudlay or karas (native
wooden harrow) and daro (native plow)
that is used in farming in the municipality
of Saint Bernard.

19. Let’s REVIEW !!!
State the Three Laws of
Motion.
 Cite examples of each.

20. Newton’s First Law of Motion

21. Newton’s 2nd Law of Motion

22. Newton’s 3rd Law of Motion

23. Question!!!
How is force related to work?

24. Tell whether work is done
in situations represented.
Identify the one doing the
work and on which object
the work is done.

26. . Work is done if the
object you push
moves a distance in
the direction towards
which you are
applying the force.

28. There is no work
done since the
object where the
boy applied the
force does not
move.

30. There is no work is
done if the force you
exert does not make
the object move in
the same direction as
the force you exerted.

33. Work is done when the
force (F) applied to the
object causes the object to
have a displacement (d) in
the same direction as the
force applied.

34. The symbol for work is
a capital W.

35. Work = Force x displacement
or
W=Fd

38. The unit, joule (J) is named
after the English Physicist
James Prescott Joule.
This is also a unit of energy.

39. The amount of work
done is the same as
the amount of energy
expended in doing
work.

40. What you put out will
come back to you in
an unexpected ways.
- unknown

42. Practice exercise…

44. Suppose a carabao is
pulling a karas or sudlay
with a 500 Newton force
along 20 meters along
paddy field, how much
work is done in pulling
the karas or sudlay?

45. Evaluation…
Using your Quiz
Notebook, answer
the following.

46. Tell whether the situations
shown below represent
examples of work. Identify
the one doing the work and
on which object the work is
done.

47. 1. The man carrying a daro or arado.
((Native Plow) (DCLM IV-B5))

48. 2. The woman lifting a bukag or rattan
basket.

49. How much work
is needed to lift a
1.0kg rattan
basket to a height
of 5.0 meters
above the
ground?

50. Assignment
Explain how work related to
energy