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T3_PHY

Total questions: 110

Worksheet time: 2hrs 50mins

Name
Class
Date
1.
The amount of force pushing on an area is the definition of....
a)
Fluid
b)
Viscosity
c)
Barometer
d)
Pressure
2.
What pressure does a 4000N horse exert on the ground if each foot is 10cm2?
a)
40 N/cm2
b)
100 N/cm2
c)
400 N/cm2
d)
10 N/cm2
3.
Army tank tracks are useful for travelling through the mud because..
a)
they decrease the force the vehicle exerts on the ground
b)
they increase the force the vehicle exerts on the ground
c)
they decrease the pressure the vehicle exerts on the ground
d)
they increase the pressure the vehicle exerts on the ground
4.
Which of these animals would probably cause the greatest pressure on the ground?
a)
A fat cow with big feet
b)
A fat cow with small feet
c)
 A calf with big feet
d)
A calf with small feet
5.
Pressure is measured in what units
a)
Newtons
b)
m/s
c)
Pascals
d)
Moles
6.
Pressure can be measured in Pascales (Pa) or Newtons per square metre.
1 Pa = 1N/m2
a)
True
b)
False
7.
The pressure resulting from a force of 50 N exerted over an area of 5 m2 is
a)
10 N
b)
0.1 N
c)
10 N/m2
d)
0.1 Pa
8.
What is the equation used to calculate pressure?
a)
pressure= force/mass
b)
pressure =mass/volume
c)
pressure=area/force
d)
pressure=force/area
9.

Which one is the correct formula relating force, pressure and area?

a)

F = P / A

b)

A = F x P

c)

P = F / A

d)

P = A /F

10.

Which of the following is NOT a unit for pressure?

a)

Pa

b)

N/cm2

c)

Nm2

d)

N/m2

11.

Wearing skis on snow spreads out the skier's weight, this

a)

increases pressure by increasing contact area

b)

increases pressure by decreasing contact area

c)

decreases pressure by increasing contact area

d)

decreases pressure by decreasing contact area

12.

A sharp knife has

a)

a large contact area and a large pressure

b)

a small contact area and a large pressure

c)

a small contact area and a small pressure

d)

a large contact area and a small pressure

13.

A piece of glass can withstand a pressure of 2.1 N/cm², what is the minimum force needed to break the glass with a special hammer of surface 3cm by 4cm?

a)

9.3 N

b)

16.8 N

c)

8.4 N

d)

25.2 N

14.

Ice cracks if the pressure on it is more than 3000 N/m². A man of weight 900 N wants to safely walk over the ice. What should be the area of each of his snowboots?

a)

0.15 m2

b)

0.30 m2

c)

1.67 m2

d)

3.33 m2

15.

Sam of weight 450 N sits on a chair with 4 legs. Each leg has a contact area of 3 cm by 6 cm with the ground. What is the pressure exerted on the ground?

a)

6.25 Pa

b)

25 Pa

c)

6.25 N/cm2

d)

25 N/cm2

16.

Which would be the least likely to sink into soft ground?

a)

A loaded lorry with 4 wheels.

b)

An empty lorry with 4 wheels.

c)

A loaded lorry with 6 wheels.

d)

An empty lorry with 6 wheels.

17.

A brick of weight 80 N rests on the ground. What is the maximum pressure it can exert on the ground?

a)

0.08 N/cm2

b)

0.8 N/cm2

c)

0.4 N/cm2

d)

1.6 N/cm2

18.

A person weighs 700N and their feet have a surface area of 0.1m2. How much pressure is exerted?

a)

7000N/m2

b)

70N/cm2

c)

100N/m2

19.
The pressure resulting from a force of 50 N exerted over an area of 5 m2 is
a)
10 N
b)
0.1 N
c)
10 N/m2
d)
0.1 Pa
20.

What pressure does a 4000N horse exert on the ground if each foot is 10cm2?

a)

40 N/cm2

b)

100 N/cm2

c)

400 N/cm2

d)

10 N/cm2

21.
What is the instrument that measures air pressure called?
a)
Graduated cylinder
b)
Barometer
c)
Force scale
d)
Anemometer
22.
True or false:
Pressure depends on depth
a)
true
b)
false
23.

In the image which hole will allow the water to travel furthest?

a)

A

b)

B

c)

C

24.
If the horse reared up on 2 legs what effect would it have on the pressure?
a)
it will exert half the pressure it did before
b)
it will exert the same pressure it did before
c)
it will exert twice the pressure it did before
d)
it will exert four times the pressure it did before
25.

What happens to liquid pressure as you go deeper under water?

a)

it increases

b)

it decreases

c)

it stays the some

d)

no soup for you!

26.

What happens to atmospheric pressure as you move further away from the surface of the earth (i.e. as you go higher in the sky) ?

a)

it increases

b)

it decreases

c)

it stays the same

d)

I don't know

27.
Where is pressure the greatest on the dam?
a)
D
b)
C
c)
B
d)
A
28.

The diagrams show, to the same scale, the vertical sections of a set of circular vessels, each containing the same depth of water.

a)

The water exerts the same pressure on the base of each vessel.

b)

The water exerts the greatest pressure on the base of vessel S.

c)

The water exerts the greatest pressure on the base of vessel P.

d)

The water exerts the same force on the base of each vessel.

29.

When a diver dives deeper into the ocean, he will experience ...................... liquid pressure

a)

greater

b)

less

c)

no

30.

Recall that Liquid pressure depends on the depth below the surface and also depends on the density of the fluid.


Sea water is denser than Lake water.

Fish X is above Fish Y in the Lake water.

Fish Z is at the same depth as Fish Y but Fish Z is in the Sea water.


The pressure of water exerted on the fishes is PX, PY and PZ respectively.


Which comparison is correct about the pressure of water exerted on the fishes?

a)

PZ > PY > PX

b)

PZ = PY

c)

PX > PY

d)

PZ < PX < PY

31.

Calculate the pressure exerted by the water on the fish.

[Density of water = 1 000 kg m−3 and g = 10N/kg]

a)

5 × 104 Pa

b)

5 × 107 Pa

c)

5 × 106 Pa

d)

5 × 10-1 Pa

32.

Water is stored in a large tank as shown by the the shaded rectangle in the diagram. This water tank is 3m tall and elevated at a height of 22m above the ground.

M is, a smaller storage tank, located inside the house at a height of 15m above the ground.

Calculate the pressure of the water at position M inside the house.

[Density of water = 1 000 kg m−3 and g = 10N/kg]

a)

1.0 × 105 N m−2

b)

1.5 × 105 N m−2

c)

2.2 × 105 N m−2

d)

2.5 × 105 N m−2

33.

Two identical containers containing liquid M and liquid N with 28 cm height and 20 cm height respectively. Both containers produce the same water spurt at the bottom.

If the density of liquid M is 2.0 g cm−3, find the density of liquid N.

(g = 10N/kg)


Hint: since both containers produce the same water spurt then the both containers have the SAME pressure at the bottom.

a)

0.70 g cm−3

b)

1.40 g cm−3

c)

1.43 g cm−3

d)

2.80 g cm−3

34.

Given that the pressure of sea water at the bottom of an ocean is 7.65 × 107 N m−2, calculate the depth of the ocean.

[Density of sea water = 1.02 × 103 kg m−3 and g = 10N/kg]

a)

7.5 × 108 m

b)

7.5 × 104 m

c)

7.5 × 103 m

d)

7.5 × 102 m

35.

When you increase your depth under water, the water pressure on your body

a)

increases

b)

decreases

c)

stays the same

36.
Density of air is greater ________.
a)
at the top of the mountain
b)
at the bottom of the mountain
c)
at the center of the mountain
37.
Air pressure does not crush objects on earth
a)
because more air pushes down than up
b)
because gravity keeps air pressure away
c)
because air pressure pushes in all directions
d)
because the Earth has an opposing force of gravity
38.
Why is it hard to breath at high altitudes?
a)
There is too much oxygen in this location.
b)
There is a higher density of air molecules.
c)
There is a low density of air molecules.
d)
The air pressure is greater than at low altitudes.
39.
If density of air is high, pressure is:
a)
high
b)
low
40.

The diagram shows a cross-section of a pool. The density of water in the pool is 1000 kg m-3.

What is the pressure exerted by the water at X?

a)

2.5 x 102 Pa

b)

2.5 x 10-3 Pa

c)

4.0 x 103 Pa

d)

4.0 x 104 Pa

41.

Diagram 6 shows a container filled with water.

Which is the correct comparison of the pressure at P and Q?

a)

Pressure at P > pressure at Q

b)

Pressure at P = pressure at Q

c)

Pressure at P < pressure at Q

42.

Diagram 8 shows two divers in a lake and a diver in a sea. The pressure of water at T, S and U is PT, PS and PU respectively.

a)

PU > PT > PS

b)

PU < PT < PS

c)

PU = PT > PS

d)

PU = PT < PS

43.

Diagram 7 shows two identical containers containing liquid P and Q.

When the height of liquid P is 15 cm and the height of liquid Q is 20 cm, water spurts is the same.

The density of liquid P is 2.0 g cm-3.

What is the density of liquid Q?

a)

0.67 g cm-3

b)

1.30 g cm-3

c)

1.50 g cm-3

d)

2.70 g cm-3

44.

Diagram 11 shows the process of supplying water from a water tank on a hill to a water tank X on a tall building.

Calculate the pressure of the water at X?

[Density of water: 1000 kg m-3]

a)

1.0 x 105 Nm‑2

b)

1.4 x 105 Nm‑2

c)

1.6 x 105 Nm‑2

d)

2.6 x 105 Nm‑2

45.

Diagram 9 shows water spurting out from a container at different depths. Which graph shows the correct relationship between the pressure exerted by the water, p and the depth of the water, h?

a)
b)
c)
d)
46.

Kumar and Abu are fishing in a lake. The bait used sinks 7.0 m into the lake. What is the water pressure exerted on the bait?

[Density of water = 1000 kgm-3]

a)

7.0 x 104 Pa

b)

7.0 x 103 Pa

c)

1.4 x 103 Pa

d)

1.4 x 101 Pa

47.

Diagram 11 shows a submarine in a sea.

What is the depth, h, of the submarine when the total pressure is 2.06 x 107 Pa?

[Density of water = 1.03 x 103 kgm-3]

a)

2.00 x 103 m

b)

2.00 x 104 m

c)

2.12 x 109 m

d)

2.12 x 1011 m

48.

Diagram 10 shows a water container being tilted to increase the outflow of the speed of water.

Which factor increases the speed of water?

a)

Gravity

b)

Depth of water

c)

Volume of water

d)

Density of water

49.

What is the pressure difference, in cm of water, shown by the manometer?

a)

9

b)

16

c)

20

d)

25

50.
a)

A

b)

B

c)

C

d)

D

51.

Pressure can be measure in cm of water.

What is the pressure of the gas?

a)

8 cm of water more than atmospheric pressure

b)

12 cm of water more than atmospheric pressure

c)

8 cm of water less than atmospheric pressure

d)

12 cm of water less than atmospheric pressure

52.
a)

A

b)

B

c)

C

d)

D

53.

What is the pressure of the sample of gas trapped in the open-tube mercury manometer shown below if atmospheric pressure is 736 mmHg and h = 9.2 cm?

a)

92 mm Hg

b)

736 mm Hg

c)

745.2 mm Hg

d)

828 mm Hg

54.

What will happen to the height (h) of the mercury column in the manometer shown below if the stopcock is opened, given that the atmospheric pressure is 755 mmHg?

a)

h will decrease

b)

h will not change

c)

h will increase

d)

not enough information given to answer the question

55.

Which gas has a greater pressure?

a)

air

b)

methane

c)

The gas pressures are equal

56.

If the air pressure is 750 mmHg, what is the pressure of Gas B?

a)

695 mmHg

b)

805 mmHg

c)

750 mmHg

d)

55 mmHg

57.

What is the pressure of gas C if the air pressure is 760?

a)

1405 mmHg

b)

645 mmHg

c)

115 mmHg

58.

A manometer is used to measure the pressure of an unknown gas. What is the Pressure of the unknown gas? (atmospheric pressure = 100 kPa, density of mercury = 13,600 kg/m3)

a)

121.8 kPa

b)

128.6 kPa

c)

106.8 kPa

d)

93.2 kPa

59.

If the atmospheric pressure is 740 mmHg, what is the pressure of the methane gas?

a)

740 mmHg

b)

770 mmHg

c)

710 mmHg

d)

30 mmHg

60.

Which gas has a greater pressure?

a)

Gas C

b)

Air

c)

The gas pressures are equal

61.

The pressure inside the toy is

a)

more than the air pressure

b)

less than the air pressure

c)

equal to the air pressure

d)

equal to the gauge pressure

62.

The height difference (here in the picture) between the levels of the u tube manometer is equal to the

a)

atmospheric pressure

b)

the difference between air pressure and gas pressure

c)

none

d)

gas pressure

63.

The air pushes equally on both sides so, gauge pressure is zero

a)

True

b)

False

64.

A simple U-tube or manometer has a side filled with water and another with an unknown blue fluid. Which side has the larger absolute pressure at the bottom of its column?

a)

left

b)

right

c)

equal

65.

In the same system, which fluid has the greater density?

a)

water

b)

unknown fluid

c)

both have the same density

66.

The figure shows a glass tube filled with 50 cm height of liquid M and 30 cm height of liquid N.

The densities of liquid M and N are 1000 kgm-3 and 2500 kgm-3 respectively. Given that g = 10 ms-2, what is the pressure of liquid M and N at point y?

a)

5,000 Pa

b)

7,500 Pa

c)

12,500 Pa

d)

1250 kPa

67.

Water with density of 1 g cm-3 and oil are

filled into a U-tube. What is the density of the oil ?

a)

0.83 g cm-3

b)

1.20 g cm-3

c)

8.30 g cm-3

d)

0.90 g cm-3

68.

A student walks 3 blocks south, 4 blocks west, and 3 blocks north. What is the displacement of the

student?

a)

4 blocks east

b)

4 blocks west

c)

10 blocks west

d)

10 blocks east

69.

What is the average speed of an object that travels 6.00 meters north in 2.00 seconds and then travels 3.00 meters east in 1.00 second?

a)

9.00 m/s

b)

4.24 m/s

c)

3.00 m/s

d)

0.333 m/s

70.

If an object is traveling north with a decreasing speed, the direction of the object's acceleration is

a)

west

b)

north

c)

south

d)

east

71.

The speedometer in a car does not measure the car’s velocity because velocity is a

a)

vector quantity and has a direction associated with it

b)

vector quantity and does not have a direction associated with it

c)

scalar quantity and has a direction associated with it

d)

scalar quantity and does not have a direction associated with it

72.

Velocity is to speed as displacement is to

a)

acceleration

b)

mass

c)

time

d)

distance

73.

A toy car moves 8 m in 4 s at the constant velocity. What is the car’s velocity?

a)

1 m/s

b)

2 m/s

c)

3 m/s

d)

4 m/s

74.

A train moves at a constant velocity of 50 km/h. How far will it move in 0.5 h?

a)

10 km

b)

20 km

c)

25 km

d)

45 km

75.

A boat can move at a constant velocity of 8 km/h in still water. How long will it take for the boat to move 24 km?

a)

2 h

b)

3 h

c)

4 h

d)

6 h

76.

Which of the following is a vector quantity?

a)

time

b)

velocity

c)

speed

d)

distance

77.

A car at accelerates from 0 m/s to 25 m/s in 5 seconds. What is the average acceleration of the car?

a)

30 m/s2

b)

50 m/s2

c)

125 m/s2

d)

5 m/s2

78.

What is the unit of measurement used in physics for speed?

a)

seconds

b)

seconds per meter

c)

meters

d)

meters per second

79.

Velocity is a vector measurement because it has both a magnitude and a ________.

a)

Time

b)

Distance

c)

Direction

d)

Temperature

80.

If a person runs 100 meters in 10 seconds, what is their average speed?

a)

1 m/s

b)

2 m/s

c)

5 m/s

d)

10 m/s

81.

The velocity of a plane is 500 miles per hour west. What is the speed of the plane?

a)

West

b)

500 miles per hour

c)

250 miles per hour

d)

500 miles per hour west

e)

500 miles per hour east

82.

Which one of the following quantities is NOT a vector?

a)

10 mi/hr, east

b)

10 mi/hr/sec, west

c)

35 m/s, north

d)

20 m/s

83.

Which one of the following quantities is NOT a speed?

a)

10 mi/hr

b)

10 mi/hr/sec

c)

35 m/s

d)

20 m/s

84.

How far would you travel moving at 12 m/s for 3.00 minutes?

a)

36.0 m

b)

2160 m

c)

40.0 m

d)

36.0 miles

85.

Find the distance a hiker walks if he travels 3.50 mi north, and then turns around and walks 3.00 mi south.

a)

0.50 mi

b)

3.00 mi

c)

1.50 mi

d)

6.50 mi

86.

Find the displacement for a hiker who walks 3.50 mi north, and then turns around and walks 3.00 mi south.

a)

0.50 mi

b)

6.50 mi

c)

0.50 mi north

d)

6.50 mi north

87.

Determine the displacement for a car that travels 25 mi east and 25 mi north.

a)

50 mi northeast

b)

35 mi northeast

c)

50 mi north

d)

35 mi east

88.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
89.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
90.
What law?
a)
1st
b)
2nd
c)
3rd
91.
This person bought coffee and put it on the seat next to them. If they stopped quickly and the coffee spilled which law would that represent?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
92.
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
93.
In the picture, the vehicle will move because of...
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 9th Law
94.
A car speeding up, a dog slowing down and person turning around the block are examples of..
a)
Balanced Forces
b)
Unbalanced Forces
95.

Which diagram best shows person pushing a couch (accelerating) across the floor?

a)
b)
c)
d)
96.

Which free body diagram is correct for a car being pulled at a constant velocity?

a)

A

b)

B

c)

C

d)

D

e)

E

97.
Calculate the net force acting upon the object.
a)
4 N northwest
b)
11.7 N northwest
c)
46.0 N west
d)
8 N southeast
98.
8 N to the left , and 4 N to the right. Find the net force. Is this balanced?
a)
12 N Right  No
b)
4 N Left  No
c)
12 N Right  Yes
d)
4 N Left  Yes
99.
Which one is balanced?
a)
top
b)
bottom
c)
both
d)
neither
100.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
101.
What is the magnitude (size) and direction of the net force?
a)
15 N to the left
b)
15 N to the right
c)
1 N to the left
d)
1 N to the right
102.
When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?
a)
The cannon moving forward
b)
The cannonball moving forward
c)
The cannon moving backward
d)
The cannonball moving backward
103.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
104.
A 20 kg bike accelerates at 10 m/s2.  What was the force?
a)
25 Newtons
b)
20 Newtons
c)
200 Newtons
d)
10 Newtons
105.
What law?
a)
1st
b)
2nd
c)
3rd
106.
This person bought coffee and put it on the seat next to them. If they stopped quickly and the coffee spilled which law would that represent?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
107.
A 20 kg bike accelerates at 10 m/s2.  what was the force
a)
25
b)
200 N
c)
20 N
d)
10 N
108.
In the picture, the vehicle will move because of...
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 9th Law
109.

What is another name for Newton’s 1st law?

a)

Law of Inertia

b)

Law of Acceleration

c)

Law of Action/Reaction

110.

An object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an outside force. Which law does this describe

a)

2nd law

b)

1st law

c)

3rd law

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