PHYSICS PROBLEMS
1. 1. Observe the following properties :
(1).cannot be devided into its smallest part
(2).consist of two kinds of substance
(3).has negative electric charge
The properti(ies) of ion is (are)..
a. 1
b. 2
c. 3
d. 1 and 2
NO | Substance | Chemical Formula |
1 | Oxygen | O2 |
2 | Carbon | C |
3 | Water | H2O |
4 | Hydrogen | H2 |
2. The element molecule and element are...
a. 1 and 2
b. 2 and 3
c. 2 and 4
d. 4
3. 3. Which one is the property of a compound ?
a. It has the same number of electron
b. It has different properties from its contituent element
c. It has different number of electron
d. It has the same properties as its constituent element
4 Based on the graph aboe, the distance coered in two second is...
a. 16 m v (ms -1)
b. 17m
c. 20m t (s)
d. 4m 2 10
5.Based on the graph aboe the acceleration of the object is..
a. 20 m/s2
b. 10 m/s2 10
c. 5m/s2 5
d. 15m/s2 1 2
6. Some racers are riding their bikes in a qualification race.The following table shows the qualification data of one of the bikes.
No | Initial velocity (ms -1) | Final Velocity (ms -1) | Time (S) |
1 | 20 | 18 | 1 |
2 | 30 | 26 | 2 |
3 | 40 | 34 | 3 |
The decleration of the bikes is...
a. 10 ms -2
b. 2 ms -2
c. 5 ms -2
d. 7 ms -2
7. Based on the graph above, the magnitude of declaration is....
a. 3 ms -2 18
b. 2 ms -2 14
c. 6 ms -2 10
d.1 ms -2 4 6
8. Study the table below.
No | Properties |
1 | Distance between two points |
2 | Something that express quantity |
3 | Degree of hotness and coldness of an object |
4 | Ability to do work |
a. 1 and 4
b. 1
c. 4
d. 2 and 3
9. The box moves 3 meter to the left.
How much work is done by the people ?
a. 203 Joule F = 200 N
b. 700 Joule
c. 7000 Joule
d. 6.6 Joule
10. A tin plate is on thr second floor a house. The mass of the plate is 2,0 kg, what is the potential energy of the tin plane ? ( g = 10 ms-2 )
a. 20 joules
b. 200 joules tin plate
c. 400 joules
d. 40 joules 10 m
11. A car is moving on the street. The car movingnwith a constant. The speed of the caris 10 ms-1 and its mass is 1000 kg. What is the kinetik ennergy of the car ?
a. 200,000 J
b. 100,000 J
c. 20,000 J
d. 10,000 J
12. Study the graph below
Based on the graph beside the magnitude of the mechanical energy is....
200 a. 1400 J c. 1000 J
b. 500 J d. 900 J
300 700
13. Based on the figure on the right what is the right
ideal mechanical advantage of the scissors ? 10 cm
a. 1 times 30 cm
b. 2 times
c. 3 times
d. 3.3 times
14.
2.5 m
1 m
Look at the figure above.
A box is moved by using a ramp.One box is 25 kg and g =10 ms-2.What is the minimum force needed to lift up one box through the ramp ?
a. 200 N
b. 100 N
c. 500 N
d. 125 N
15. Look at the figure on the left.
What is the ideal mechanical advantage of the pulley system on the
left?
a. 1
b. 2
c. 3
d. 4
16. Observe the following figure.
No | Phenomenon |
1 | A comet moves periodically |
2 | A car is braked, so that is stops |
3 | Weight of a body on the polar is bigger then its weight on the equator |
4 | Astronuot’s weight on the moon is smaller than his weight on the earth |
The phenomenon that shows newton’s First Law is....
a. 1
b. 2
c. 3
d. 4
17. Observe the follo2wing figure.
(1) (2)
V1 = 4 m.s -1 V2 = 10 m.s -1
A trolley is moving for 3 second as shown on the figure above. If the mass the trolley is 5 kg, the force that acts on the trolley is...
a. 23 N
b. 66 N
c. 10 N
d. 20 N
18. which one is the correct pair of action –reaction forces ? N
a. F1 and F2
b. F1 and N F1 F2
c. F2 and A
d. F1 and A
19. The resultant force as shown in the figure is.... A
a. 5 N
b. 35 N 20 N
c. 40 N
d. 45N 15 N
20. The resultant force is shown in the figure is....
a. 2 N 18N 20 N
b. -2 N
c. 38 N
d. -38 N
21. The children’s has played tug of war. Andi pulling the rope to the right with 150 N to the right. Aji pulling the rope with 125 N to the left, what’s resultant force?
a. 275 N to the right
b. 275 N to the left
c. 25 N to the right
d. 25 N to the left
22. A force exerted on a nail.The magnitude of the force is 20 N.
Hammer
Nail surface area = 0.1 cm2
Wood
The pressure on wood is...
a. 2,000 Nm-2
b. 20,000 Nm-2
c. 200,000 Nm-2
d. 2,000,000 Nm-2
23.Observe the following table
No | Magnitude of force(N) | Contact Area(m2) |
1 | 10 | 0,5 |
2 | 15 | 2,5 |
3 | 5 | 0,5 |
4 | 100 | 5 |
The same magnitude of pressure in the table aove are shown by number ..
a. 1 and 2
b. 1 and 4
c. 2 and 3
d. 3 and 4
24. Some water is poured into a jar.The density of the water is 1000 kg-3 and the acceleration due to gravity is 10 m-2.
40 cm
10 cm
0 cm
What is the hidrostatik pressure at point B ?
a. 500 Nm -2
b. 2000 Nm -2
c. 1500 Nm -2
d. 1000 Nm -2
25.
A
C B
D
Baswd on the figure, which point has the lowest pressure ?
a. A
b. B
c. C
d. D
26. Water is poured into a compartment the density of water is 1000 kgm -3. Then a wooder block is put into it the volume of the wooden block is 100 cm3 (g = 10 ms-2). What is the bouyancy force that acting at the block?
a. 1.5 N
b. 1.0 N
c. 30 N
d. 10 N
27. observe the following figure !
F1 = 250 F2
A1 = 10 cm2 A2 = 30 cm2
The magnitude of F2 is....
a. 675 N
b. 400 N
c. 375 N
d. 385 N
28. The volume of piston was 150 cm3. The air pressure in the piston was 3 Pa. Then, we copress it. Its volume becomes 25 cm3. Now the air pressure in the piston is.....
a. 19 Pa
b. 18 Pa
c. 20 Pa
d. 8 Pa
29. The high of a town is 500 m above sea level. The atmospheric in this town is.....
a. 72 cmHg
b. 70 cmHg
c. 60 cmHg
d. 65 cmHg
30. The atmospheric pressure in of a montain is 50 cmHg. Its height is.... above sea level
a. 2700 m
b. 490 m
c. 2600 m
d. 260 m
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