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survey of physics

Total questions: 78

Worksheet time: 8hrs 12mins

Name
Class
Date
1.

A force of 50 N pushes to the right, and a force of 20 N pushes to the left, the object will

a)

accelerate

b)

not accelerate

2.

this force diagram shows (notice the applied force is bigger than the friction force)

a)

an object moving to the right

b)

an object at rest

c)

an object falling

d)

an object slowing down

3.
What is the net force?
a)
5.5 N left
b)
5.5 N right
c)
2.5 N left
d)
2.5 N right
4.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
5.
If these boys are pulling with the same amount of force.  What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
6.
What is the person doing from 5 seconds to 10 seconds?
a)
Walking 
b)
Running
c)
Standing Still 
d)
Walking Fast
7.
A car slows down from +32 m/s to +8 m/s in 4 s. The acceleration is 
a)
6 m/s/s opposite the motion
b)
2m/s/s in the direction of motion
c)
8 m/s/s opposite the motion
8.
An airplane accelerates down a runway at 3.20 m/s/s
for 8 s until it finally lifts off the ground.
Determine the velocity at take-off.
a)
0.4 m/s
b)
25.6 m/s
c)
2.5 m/s
9.
A car is traveling at 21.0 m/s. It slows to a stop at a constant rate over 5.00 s. How far does the car travel during those 5.00 seconds before it stops? 
a)
4.20 m
b)
52.5 m
c)
105 m
d)
158 m
10.

A golf ball starts with a speed of 2 m/s and slows at a constant rate of 0.5 m/s2, what is its velocity after 2 s?

a)

0 m/s

b)

0.5 m/s

c)

1 m/s

d)

3 m/s

11.

A ball is thrown downward from the top of a roof with a speed of 25 m/s. After 2 s, its velocity will be:

(Choose upward as positive)

a)

19.6 m/s

b)

-5.4 m/s

c)

-44.6 m/s

d)

44.6 m/s

12.

A hacky sack is thrown up into the air with an initial velocity 3 m/s. What is the hang time of the hacky sack if it returns to the same point from which it was thrown?

a)

0.3 seconds

b)

0.61 seconds

c)

1.2 seconds

d)

3.26 seconds

13.
A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s2. What is the time interval required for it to reach a 4.2 rad displacement after starting from rest   
a)

1.8 s

b)

2.0 s

c)

16 s

d)

18 s

14.
A 0.12-m-radius grinding wheel takes 5.5 s to speed up from 2.0 rad/s to 11.0 rad/s. What is the wheel's average angular acceleration?
a)

9.6 rad/s2

b)

4.8 rad/s2

c)

3.1 rad/s2

d)

1.6 rad/s2

15.

A gear spins at a rate of 400 revolutions/minute. Which choice is closest to its angular speed in radians/second?

a)

6.67 rad/s

b)

2500 rad/s

c)

41.9 rad/s

d)

20.9 rad/s

16.
A flywheel starts from rest, and has an angular acceleration of 4 rad/s2. What will be its angular speed when it has made one revolution? 
a)

5.01 rad/s

b)

50.27 rad/s

c)

2.83 rad/s

d)

7.09 rad/s

17.

What is the angular displacement in radians if a paint spot on a tire turns from 57.3 degrees to 282 degrees?

a)

12834 rad

b)

224.7 rad

c)

3.9 rad

d)

180 rad

18.

What is the average angular velocity in radians if a paint spot on a tire turns from 57.3 degrees to 282 degrees in 0.5 sec?

a)

25668 rad/s

b)

7.8 rad/s

c)

449 rad/s

d)

1.95 rad/s

19.
A wrench is used to tighten a nut. A 15N perpendicular force is applied 50cm away from the axis of rotation, and moves a distance of 10 cm as it turns. What is the torque applied to the wrench?
a)

7.5 Nm

b)

1.5 Nm

c)

750 Nm

d)

150 Nm

20.

If the torque required to loosen a nut on the wheel of a car has a magnitude of 60.0 Nm, what minimum perpendicular force must be exerted by a mechanic at the end of a 45.0 cm wrench to loosen the nut?

a)

2700 N

b)

 133 N

c)

27 N

d)

1.3 N

21.
What is the weight of the package?
a)

5 N

b)

10 N

c)

15 N

d)

20 N

22.
What is the weight of the package?
a)

5 N

b)

10 N

c)

15 N

d)

20 N

23.
Looking at the picture, which way will it rotate?
a)

Clockwise

b)

Counter clockwise

c)

Neither

24.
A ceiling fan has 18 inch blades and turns at a rate of 45 revolutions per minute.  What is the angular speed in radians per hour?
a)
90π rad / 1 hr
b)
2700π rad / 1 hr
c)
5400π rad / 1 hr
d)
97200π rad / 1 hr
25.
A car tire has a diameter of 14 inches and is spinning at a rate of 10 revolutions per second. What is the angular speed in radians per hour?
a)
120π rad / 1 hr
b)
1,008,000π rad / 1 hr
c)
504,000π rad / 1 hr
d)
7200π rad / 1 hr
26.
Determine the linear velocity of the tips of the blades in inches per minute for a ceiling fan with 20 inch blades rotating at 45 rpm.
a)
5654.9 in/min
b)
1800 in/min
c)
2827.4 in/min
d)
900 in/min
27.
You drop a 5 kg ball from a height of 2 m. Just before it reaches the ground, what type of energy does it have?
a)
Potential Energy
b)
Kinetic Energy
c)
Nuclear Energy
d)
Chemical Energy
28.
A 5 kg ball is lifted 12 m above the ground. It's gravitational potential energy is
a)
60 J
b)
600 J
c)
17 J
d)
2.4 J
29.
Which position has the most kinetic energy?
a)
A
b)
G
c)
D
d)
B
30.
Which position has the most potential energy?
a)
A
b)
G
c)
C
d)
D
31.
A 40 kg crate is picked up by a crane to a height of 50m. The crate falls. What is the velocity of the crate just before it hits the ground?
a)
2000 Joules
b)
19,600 Joules
c)
19,600 m/s
d)
31.3 m/s
32.
When my velocity triples, my kinetic energy increases by ______ times.
a)
9
b)
 3 
c)
1.5
d)
4.5
33.
When a 65 kg skydiver jumps from a plane, her speed steadily increases until air resistance provides a force that balances the force due to free fall.  How fast is the skydiver falling if her kinetic energy at the moment is 704000J?
a)
21661.53 m/s
b)
147.17 m/s
c)
22880.0 km/s
d)
10830.76 m/s
34.
In diagram 2, if the 600 kg cart is initially at rest, what is its velocity at point B?
a)
19.8 m/s
b)
15.0 m/s
c)
10.3 m/s
d)
3.8 m/s
35.

1. A ball has a 17 J of kinetic energy and its mechanical energy is 25 J. If the ball has a mass of 3.2 kg, what is its height above the ground?

a)

0.26 m

b)

0.52 m

c)

5.2 m

d)

25 m

36.

As the 2-kg ball descends the potential energy ...

a)

increases

b)

decreases

c)

stays constant

37.

What is the KE at point C of the 2kg ball if the EM equals 100J?

a)

20J

b)

40J

c)

60J

d)

100J

38.

If KE= 60J, what is the velocity at point C of the 2kg ball?

a)

2\sqrt{2}

b)

  6\sqrt{6}  

c)

  10\sqrt{10}  

d)

  60\sqrt{60}  

39.

What is the minimum KE the cart should have in order to make it up the 10m ramp?

a)

100J

b)

10J

c)

500J

d)

200J

40.

What will be the KE at point C (the ball was at rest at point A before it started to roll down)?

a)

400J

b)

100J

c)

0J

d)

40J

41.

The rollercoaster has both PE and KE, but where will it have more PE than KE?

a)

1

b)

2

c)

3

d)

4

e)

5

42.
If 150 Joules of work is needed to move a box 10 meters, what force was used? 
a)
1500 N
b)
15 N
c)
1.5 N
d)
150 N
43.

How much work is done on a 200-kg crate that is hoisted 2 m in a time of 4 s?

a)

400 J

b)

1000 J

c)

1600 J

d)

4000 J

44.
Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.
a)
7.18 L 
b)
7.81 L
c)
4.63 L
d)
4.36 L
45.
If the pressure exerted by a gas at 25 degrees C in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?
a)
.002766 mole
b)
.0069 mol
c)
2.766 mol
d)
9.887 mol
46.
What is the pressure exerted by 5.00 moles of nitrogen gas contained in a 30.0 Liter container at 25.0 °C?
a)

3670 atm

b)

0.245 atm

c)

4.08 atm

d)

605 atm

47.
At 17 °C, a 0.80 mole sample of a gas exerts a pressure of 1.2 atmospheres. What is the volume of the container?
a)

22.9 Liters

b)

2355 Liters

c)

0.0630 Liters

d)

15.9 Liters

48.
At what temperature (in Kelvin) would 4.0 moles of hydrogen gas in a 100 liter container exert a pressure of 1.00 atmospheres?
a)

0.0305 K

b)

0.487 K

c)

32.8 K

d)

304.5 K

49.

Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under 0.998 atm pressure. 

a)

0 K 

b)

107 K 

c)

207 K 

d)

310 K 

50.

ln the Empire State Building Run-Up, competitors race up the 1576 steps (86 flights) of the Empire State Building, climbing a total vertical distance of 320 m. How much work does a m 74 kg racer do?

a)

2.321 × 105 Joules

b)

2.326 × 105 Joules

c)

2.318 × 105 Joules

d)

2.317 × 105 Joules

51.

Two blocks are connected by a rope, as shown above. The masses of the blocks are 5 kg for the upper block and 10 kg for the lower block. An upward applied force of magnitude F acts on the upper block.

Question

If the net acceleration is downward but has a magnitude less than g, then which has the larger magnitude, the force F or the tension in the rope?

a)

The tension in the rope

b)

Force F

c)

Neither. They have equal but nonzero magnitudes.

d)

Neither. They have equal zero magnitudes.

52.

Two blocks are connected by a rope, as shown above. The masses of the blocks are 5 kg for the upper block and 10 kg for the lower block. An upward applied force of magnitude F acts on the upper block.

Question

If the F = 180 N, what is the tension in the rope?

a)

120 N

b)

100 N

c)

220 N

d)

200 N

53.

A rope of negligible mass supports a block that weighs 30 N, as shown above. The breaking strength of the rope is 50 N. The largest acceleration that can be given to the block by pulling up on it with the rope without breaking the rope is most nearly

a)

6 m/s2

b)

6.7 m/s2

c)

10 m/s2

d)

15 m/s2

e)

16.7 m/s2

54.

Two blocks of wood, each of mass 2 kg, are suspended from the ceiling by strings of negligible mass, as shown above.What is the force exerted on the upper block by the lower string?

a)

zero

b)

10 N upward

c)

10 N downward

d)

20 N upward

e)

20 N downward

55.

Two blocks of wood, each of mass 2 kg, are suspended from the ceiling by strings of negligible mass, as shown above.What is the tension in the upper string?

a)

10 N

b)

20 N

c)

40 N

d)

50 N

e)

60 N

56.
When the clock reads 1:45 p.m., what is the rotational position of the minute hand in radians, as measured from a 12:00 reference line?
a)
π/4
b)
π/2
c)
π
d)
–π/4
57.
If the angular velocity of an object changes from 3 rad/s to 1 rad/s in 2 seconds, what is the object's angular acceleration?
a)
–1.5 rad/s^2
b)
–1 rad/s^2
c)
1 rad/s^2
d)
1.5 rad/s^2
58.

You exert 200 J of work by pulling on an object with 20 N of force. What distance is the object moved?

a)

.01 m

b)

10 m

c)

10 J

d)

4,000 m

59.

If Jay Loppy pushes his van 20 meters how much work is done?

a)

2,000J

b)

40,000J

c)

10,000J

d)

800,000J

60.
What is the coefficient of static friction if it takes 44 N of force to move a box that weighs 86 N? 
a)
0.78
b)
0.51
c)
0.78 N
d)
0.58 N
61.
A box weighing 46 newtons rests on an incline that makes an angle of 25° with the horizontal. What is the magnitude of the component of the box’s weight perpendicular to the incline?
a)
19N
b)
21N
c)
42N
d)
26N
62.
An 8.0-newton block is accelerating down a frictionless ramp inclined at 15° to the horizontal. What is the magnitude of the net force causing the block’s acceleration?
a)
0N
b)
2.1N
c)
7.7N
d)
8.0N
63.
A 3.0-kg block slides on a frictionless 20° inclined plane. A force of 16 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block?
a)
2 m/s^2 down the incline
b)
5.3 m/s^2 up the incline
c)
2 m/s^2 up the incline
d)
3.9 m/s^2 down the incline
64.

What type of system is this?

a)

Open

b)

Closed

c)

Isolated

65.

What type of system is this?

a)

Open

b)

Closed

c)

Isolated

66.

What type of system is this?

a)

Open

b)

Closed

c)

Isolated

67.

What type of system is this?

a)

Open

b)

Closed

c)

Isolated

68.

For the process Y→Z, Q is greater than zero and

a)

W<0 and ΔU=0

b)

W=0 and ΔU<0

c)

W=0 and ΔU>0

d)

W >0 and ΔU=0

e)

W>0 and ΔU>0

69.

For the process X→Y, ΔU is greater than zero and

a)

Q<0 and W = 0

b)

Q<0 and W>0

c)

Q>0 and W<0

d)

Q>0 and W=0

e)

Q>0 and W>0

70.

An ideal gas undergoes a cyclic process as shown on the graph above of pressure P versus volume V.


During which process is no work done on or by the gas?

a)

AB

b)

BC

c)

CD

d)

DE

e)

EA

71.

An ideal gas undergoes a cyclic process as shown on the graph above of pressure P versus volume V.


At which point is the gas at its highest temperature?

a)

A

b)

B

c)

C

d)

D

e)

E

72.

A gas is taken from state i to state f along the two-step process shown in the PV diagram above.


How much work is done on the gas during the process described?

a)

0 J

b)

2,000 J

c)

4,000 J

d)

8,000 J

e)

16,000 J

73.

A gas is taken from state i to state f along the two-step process shown in the PV diagram above.


What is the ratio Tf / Ti of the temperature of state f to the temperature of state i?

a)

1

b)

4/3

c)

3/2

d)

2

e)

4

74.

1200 J of heat are added to a sample of gas while the gas does 400 J of work on the environment. What is the change in internal energy of the gas?

a)

800 J

b)

1600 J

c)

-800 J

d)

-1600 J

75.

During process A, from state 1 to state 2, the temperature of the ideal gas

a)

stays the same

b)

increases

c)

decreases

d)

is half as much

76.

Process B on the PV diagram is an ______________ process.

a)

adiabatic

b)

isobaric

c)

isochoric

d)

isothermal

77.

If the temperature of a gas increases and there is negative work done on the gas, then...

a)

there must be heat added to the gas

b)

the gas must be giving off heat to the environment.

c)

this is an adiabatic process.

d)

there must be less heat added than the work done on the gas.

78.

During process D, from state 4 to state 1, the ideal gas...

a)

is increasing temperature.

b)

is doing work on the environment.

c)

is decreasing pressure.

d)

is decreasing temperature.

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