The document contains questions from 5 different categories on physics concepts like forces, energy, heat, sound, and light. The questions range from easy multiple choice to more complex word problems requiring calculations. The answers provided show work or explain the concept being tested in the question.

1. May the Force
be with you
10
20
30
40
50
Stronger Faster
bigger
10
20
30
40
50
Sound of Music
10
20
30
40
50
HEAT is On
10
20
30
40
50
Anything under
the sun
10
20
30
40
50

2. Category 1

3. Question
A 2 kg book is pushed on the table. If the
acceleration is 2.1 m/s to the left. What is the net
force exerted on the papaya

4. AnswerCategory 1 answer for 10 points
G- m= 2kg a= 2.1 m/s
U- F?
E- F=ma
S- ( 2kg) ( 2.1 m/s)
S- 4.2 N

5. QuestionCategory 1 question for 20 points
Which of the following shows Newton’s 1st law of
motion?
a. Soldier leans backward a when he fired a gun.
b. A magician pulls the table cloth out from under
dishes without disturbing them.
c. A soccer ball accelerates more than the bowling
ball when thrown with the same net force.

6. Answer
Category 1 answer for 20 points
B

7. Question Category 1 question for 30 points
What is the free body diagram in this situation.
A book is at rest on a tabletop.
a. B. C.

8. AnswerCategory 1 answer for 30 points
c.

9. QuestionCategory 1 question for 40 points
Which object would have the greatest force?
a. 20 kg object accelerating at 2.5 m/s
b. 3 kg object accelerating at 3 m/s
c. 30 kg object accelerating at 2 m/s

10. Answer
Category 1 answer for 40 points
c. 30 kg object accelerating at 2 m/s

11. QuestionCategory 1 question for 50 points
A 10 kg box is pushed on the table. If the
acceleration is 5 m/s to the left. What is the net
force exerted on the papaya

12. AnswerCategory 1 answer for 50 points
G- m= 10 kg a= 5 m/s
U- F?
E- F=ma
S- ( 10 kg) ( 5 m/s)
S- 50 N

13. Category 2 questions follow

14. QuestionCategory 2 question for 10 points
In Olympic games the winner and the runner up has
the same mass. But the winner has more _____.
a. Force
b. Work
c. Power
d. Energy

15. Answer
Category 2 answer for 10 points
C.POWER

16. Question
Category 2 question for 20 points
How much work do you do pushing a sack of rice
with a force of 100 N across a distance of 5 m?

17. AnswerCategory 2 answer for 20 points
G- F=100 N d= 5 m
U- w?
E- w= Fd
S- (100N) ( 5m)
S- 500 J

18. QuestionCategory 2 question for 30 points
Explain why there is no work in the illustration?

19. Answer
Category 2 answer for 30 points

20. QuestionCategory 2 question for 40 points
Which of the two boys has greater power?
Jack or Jill

21. Answer
Category 2 answer for 40 points
Jill
P = w/t

22. Question
Category 2 question for 50 points
Joel climbs the stair in 1.5 mins. If he weights 450 N
and the stairs is 10 m from the ground, how much
power will he develop?

23. AnswerCategory 2 answer for 50 points
G- t= 1.5 = 90 sec. F= 450 N d= 10m
U-P?
E- P= W/t
S= find the work first w= fd
= ( 450N) (10m)
W=4500Nor t50
P= 4500N/ 90sec
P= 50 m/s 50 watts

24. Category 3 questions follow

25. Question
Category 3 question for 10 points
1. ________ is the bending of sound waves.

26. Answer
Category 3 answer for 10 points
Refraction

27. Question
Category 3 question for 20 points
True or False
Bouncing back of sound is called interference.

28. Answer
Category 3 answer for 20 points
Reflection

29. Question
Category 3 question for 30 points
Why sound is not transmitted in a vacuum?

30. Answer
Category 3 answer for 30 points
They need medium for the sound to travel

31. Question
Category 3 question for 40 points
Described light and sound

32. AnswerCategory 3 answer for 40 points
They both travels in waves
Sound needs medium while light can travel even
without medium

33. Question
Category 3 question for 50 points
Why does your voice is fuller in the bathroom?

34. Answer
Category 3 answer for 50 points

35. Category 4 questions follow

36. Question
Category 4 question for 10 points
True or false
When materials is heated they expand.

37. Answer
Category 4 answer for 10 points
True

38. Question
Category 4 question for 20 points
Heat is transferred from cold body to warm body.

39. Answer
Category 4 answer for 20 points
False

40. Question
Category 4 question for 30 points
Heat energy of the sun reaches the earth through
convection

41. Answer
Category 4 answer for 30 points
False

42. Question
Category 4 question for 40 points
Why electric wires are not fully stretched?

43. Answer
Category 4 answer for 40 points
For thermal expansion

44. Question
Category 4 question for 50 points
How much energy would be needed to heat 450
grams of copper metal from a temperature of
25.0ºC to a temperature of 75.0ºC? The specific
heat of copper is 0.385 J/g ºC.

45. AnswerCategory 4 answer for 50 points
G- m=450 g c= 0.385 J/g ºC T= 50 ºC
U= Q?
E= Q=mc T
S= (450g)(0.385 J/g ºC ) (50 ºC)
S= 86662.5 J

46. Category 5 questions follow

47. Question
Category 5 question for 10 points
______ is the ability to do work.

48. Answer
Category 5 answer for 10 points
Energy

49. Question
Category 5 question for 20 points
What is the potential energy of 0.2 Kg ball lifted to a
height of 5.0 m above the ground?

50. Answer
Category 5 answer for 20 points
G- m 0.2kg h= 5.0 m
U-P.E ?
E- P.E=mgh
S- (0.2 kg) ( 9.8m/s) ( 5.0 m)
S= 9.8 J

51. Question
Category 5 question for 30 points
What is the color of visible light with the longest
wavelength?

52. Answer
Category 5 answer for 30 points
RED

53. Question
Category 5 question for 40 points
If the 0.2 kg ball is thrown with the velocity of 6 m/s,
What is its Kinetic energy?

54. AnswerCategory 5 answer for 40 points
G- m= 0.2 kg v= 6 m/s
U- K.E
E- K.E ½ mv₂
S- (0.2 kg) ( 6 m/s) 2
S- 3.6 J

55. Question
Category 5 question for 50 points
Why is it that during thunderstorm, the flash of
lightning is seen before the thunderclap is heard?

56. Answer
Category 5 answer for 50 points