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Physics 20-1: Review Questions

Total questions: 136

Worksheet time: 5hrs 34mins

Name
Class
Date
1.
A quantity that is ignorant of direction is referred to as a
a)
vector quantity
b)
scalar quantity
2.
An object can be moving for 10 seconds and still have zero displacement.
a)
True
b)
False
3.
A _________ quantity is completely described by magnitude alone. A _________ quantity is
completely described by a magnitude with a direction.
a)
vector, scalar
b)
scalar, vector
4.
What is the formula to calculate speed?
a)
S = t/d
b)
S = d/t
c)
S = d x t
d)
S = t x d
5.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
6.
A change in velocity over time is known as:
a)
acceleration
b)
constant speed
c)
average speed
d)
displacement
7.
At 60 seconds, how far had this object traveled? 
a)
0 m
b)
10 m
c)
20 m
d)
40 m
8.
An airplane lands on a runway with a velocity of 150 m/s. How far will it travel until it stops if its rate of deceleration is constant at -3 m/s2?
a)
525 m
b)
3750 m
c)
6235 m
d)
9813 m
9.
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:
a)
19.6 m/s
b)
-5.4 m/s
c)
-44.6 m/s
d)
44.6 m/s
10.
How much time would it take for an object to fall 4.7 meters?
a)
0.959 s
b)
4.79 s
c)
0.979 s
11.

What is the average velocity of the object between 15 and 40 seconds?

a)

6.0 m/s

b)

1.5 m/s

c)

-4 m/s

d)

0 m/s

12.

What is the rate of acceleration of the object between 0 and 4 seconds?

a)

1 m/s

b)

0 m/s2

c)

-1 m/s2

d)

1 m/s2

13.

Which graph(s) represents a constant velocity?

a)

a and c

b)

b and c

c)

c

d)

a and b

14.

What is the acceleration at the apex of a y-direction problem?

a)

Depends on the problem

b)

9.8 m/s2

c)

-9.8 m/s2

d)

Positive on the way up and negative on the way down

15.

Total distance an object travels with direction.

a)

Displacement

b)

Distance

c)

Path

d)

Velocity

16.
If it is known that an unbalanced force is acting on an object, then which of the following must be assumed regarding the object's motion?
a)
The object is at rest.
b)
]The object is moving with a constant velocity.
c)
The object is accelerating.
d)
The object is at equilibrium.
17.
Find the acceleration of the object.
a)
0.5 m/s
b)
2 m/s
c)
12 m/s
d)
144 m/s
18.
At the moment a 85 kg skydiver pulls his parachute, he experiences 900 N upward force due to air resistance. Find the net force.
a)
67 N
b)
85 N
c)
815 N
d)
833 N
19.

A net force of 250 N is applied to an object that accelerates at a rate of 5 m/sec2. What is the mass of the object?

a)

50 kg

b)

245 kg

c)

0.02 kg

d)

1250 kg

20.
In physics, for Work to be done,
a)
the force must be applied in the same direction that the object moves
b)
the force must be applied in the opposite direction of the object moving
c)
any force can act upon an object 
d)
I have no clue 
21.
The SI Unit for Power is 
a)
Joules
b)
Newton
c)
Watt 
d)
Newton Meter 
22.
An object's potential energy increases as its height ________________.
a)
Increases
b)
Decreases
23.
What is Newtons 2nd law of motion?
a)
Pancakes 
b)
Force= Mass multiplied by acceleration
c)
For every action there is a equal and opposite  re-action.
d)
Law of gravity 
24.
What is Newtons 1st law of motion?
a)
Force= Mass multiplied by acceleration 
b)
An object at rest stays at rest unless acted on an unbalanced force. (inertia)
c)
For every action there is a equal and opposite  re-action.
d)
law of gravity 
25.
What law of motion does this picture represent?
a)
Newtons 1st law
b)
Newtons 4th law 
c)
Newtons 3rd law 
d)
Newtons 2nd law
26.

A force of 25N is being applied to a 4kg box. The box moves a distance of 5m to the right. How much work is being done by the Normal Force?

a)

125J

b)

500J

c)

100J

d)

0J

27.

Pick the correct formula to calculate for Potential Energy.

a)

PE = 1/2mv2

b)

PE = mgh

c)

m = PE/gh

d)

h = PE/mg

28.
On a roller coaster, where is maximum potential energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
29.

acceleration due to gravity on Earth (g) is always...

a)

97 m/s

b)

9.8 m/s2

c)

42 m/s/s

d)

3 m/s

30.

Efficiency is calculated by Energy Out divided by Energy In, expressed as a percentage

a)

False

b)

True

31.
The tendency of an object to resist changes in its motion is...
a)
inertia
b)
force
c)
acceleration
d)
velocity
32.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
33.

How much is Fnet on the system?

a)

40 N

b)

50 N

c)

10 N

d)

4 N

34.

For the system of attached masses m1 & m2, which mass will have a higher acceleration?

a)

m1

b)

m2

c)

Both will have same acceleration because they're attached by a string

35.

Calculate the acceleration of the system.

a)

30/4 m/s2

b)

10/4 m/s2

c)

5 m/s2

d)

20 m/s2

36.

How much is Fnet on the system?

a)

50 N

b)

30 N

c)

5 N

d)

3 N

37.
A car of mass 1100 kg that is traveling at 27 m/s starts to slow down and comes to a complete stop in 578 m. What is the magnitude of the average stopping force exerted on the car?
a)
690N
b)
550N
c)
410N
d)
340N
38.
A box of mass 72 kg is at rest on a horizontal frictionless surface. A constant horizontal force of magnitude F then is exerted on the box, accelerating it to the right. You observe that it takes the box 3.4 seconds to travel 13 meters. What is the magnitude of the force F?
a)
275N
b)
160N
39.
A 50.0-kg crate is being pulled along a horizontal surface with a constant velocity. The pulling force is 10.0N and is directed 20.0° above the horizontal. What is the coefficient of friction?
a)
0.0192
b)
0.188
c)
0.0070
d)
0.068
40.
If an object is at rest on an inclined plane, which of the following forces is greatest?
a)
Normal Force
b)
Friction
c)
Weight
d)
Both Normal Force and Weight are equal, so they both are the greatest.
41.
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
42.
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
43.

Which of the following is the best expression for the Normal Force?

a)

FN = mg cos(ϴ)

b)

FN = mg sin(ϴ)

c)

FN = mg sin(180-ϴ)

d)

FN = mg cos(90-ϴ)

44.

Which of the following is the best expression for the Normal Force?

a)

FN = mg cos(ϴ)

b)

FN = mg sin(ϴ)

c)

FN = mg sin(180-ϴ)

d)

FN = mg cos(90-ϴ)

45.

If there is no friction, then the acceleration would be equal to

a)

mg

b)

sin(θ)mg

c)

g

d)

sin(θ)g

46.
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
47.
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
48.

If a system is isolated, the total energy of the system

a)

Increases constantly.

b)

Decreases constantly.

c)

Is constant.

d)

Depends on the work done on the system.

e)

Depends on the work done by the system.

49.

Which of the following is defined as an energy transfer?

a)

kinetic energy

b)

work

c)

potential energy

d)

chemical energy

50.

Rank in order, from largest to smallest, the gravitational potential energies of the balls.

a)

1 > 2 = 4 > 3

b)

1 > 2 > 3 > 4

c)

3 > 2 = 4 > 1

d)

3 > 2 > 4 > 1

51.

A major league pitcher can throw a baseball with a kinetic energy of 150 J. How much work must the pitcher do to the ball to give it that much KE?

a)

150 J

b)

0

c)

Can’t tell without knowing the mass of the ball

52.

A rock has 10 J of potential energy on top of a roof. If it is dropped and lands with only 8 joules of kinetic energy, how much work did air resistance do on the rock?

a)

-18 J

b)

-10 J

c)

-8 J

d)

-2 J

53.

How much power is required to raise a 200-kg crate a vertical distance of 2 m in a time of 4 s?

a)

400 W

b)

1000 W

c)

1600 W

d)

4000 W

54.
a)
A is Potential, B is Kinetic
b)
A is Kinetic, B is Potential
c)
A is Power, B is Work
d)
A is Work, B is Power
55.

Energy is

a)

how fast you do something.

b)

the ability to do work.

c)

confusing.

d)

how fast you lift something.

56.

On a work vs time graph, you can calculate the power by

a)

the area.

b)

the y-axis.

c)

the y-intercept.

d)

the slope.

57.

How much work is done?

a)

9 J

b)

18 J

c)

27 J

d)

36 J

58.

Which does not illustrate kinetic energy?

a)

It is expressed in Joule.

b)

It depends upon the objects’ mass and speed.

c)

It is the energy an object possesses due to its motion.

d)

It depends upon the objects’ mass and objects’ height.

59.

A 100 N force is applied to move an object a horizontal distance of 5 meters at constant speed in 10 seconds. How much power is done?

a)

50J

b)

50W

c)

500J

d)

500W

60.

How will you describe the energy at Point A?

a)

mostly potential energy

b)

mostly kinetic energy

c)

losing PE, gaining KE

d)

losing KE, gaining PE

61.
Which of the following is not an example of SHM?
a)
A simple pendulum
b)
A vibrating spring
c)
A marble on a concave surface
d)
Bouncing on a trampoline
62.
Which position shows the spring with maximum elastic potential energy?
a)
A
b)
B
c)
C
d)
D
63.

The equation for spring force is

a)

Fsp = mgh

b)

Fsp = 1/2kx2

c)

Fsp = Fd

d)

Fsp = -kx

64.

Calculate the elastic potential energy Leo puts into the trampoline mat when he stretches the mat (k= 473 Nm-1) by 0.35 m.

a)

2.887 J

b)

28.97 J

c)

82.775 J

d)

12.76. J

65.

_________ is the unit of Spring Constant

a)

N

b)

N/m

c)

m

66.

Who discovered Hooke's law?

a)

Robert Hooke

b)

Charlie

c)

Newton

67.

A bungee rope has a spring constant of 5N/m. How much a person must weighs in Newton if we want it to extend (stretch) 10m?

a)

20N

b)

22cm

c)

50N

d)

50cm

e)

21N

68.

What is the spring constant of a bungee rope in N/m if a person weighs 100 N if we want it to extend (stretch) 20m?

a)

5N/m

b)

5N/cm

c)

5N

d)

10N

e)

10N/m

69.

If a bungee rope has a spring constant of 10 N/m. How far will it extend (stretch) if a person who weighs 300 N is placed on it?

a)

21m

b)

30m

c)

31cm

d)

21miles

e)

None of the above

70.

________________ force acts on an object when it falls.

a)

Gravity

b)

Electromagnet

c)

Upthrust

71.

What do all waves transfer?

a)

Matter

b)

Heat

c)

Electricity

d)

Energy

72.

Which of the following can waves transfer energy through?

a)

solid

b)

liquid

c)

gas

d)

empty space

e)

all of the above

73.

What is the number of complete waves passing a fixed point in a given amount of time?

a)

Amplitude

b)

Intensity

c)

Wavelength

d)

Frequency

74.

What are the two types of waves?

a)

longitudinal and transverse

b)

sound and light

75.

What is the frequency of this wave? You must count the number of complete waves.

a)

1 Hz

b)

5 Hz

c)

10 Hz

76.

Period of a wave refers to...

a)

how long it takes for the event to repeat.

b)

how strong a wave is.

c)

how long a wave is.

d)

how much energy a wave has.

77.

The vibrations in a longitudinal wave are (a)   to the direction of energy transfer.

78.

Sound waves are (a)   waves.

79.

What type of wave is pictured?

a)

Transverse wave

b)

Longitudinal wave

c)

Wave, what wave?

d)

Slinky wave

80.

What part of the transverse wave is letter A?

a)

trough

b)

crest

c)

wavelength

d)

amplitude

81.

What part of the transverse wave is letter B?

a)

wavelength

b)

amplitude

c)

crest

d)

trough

82.

What part of the transverse wave is letter C?

a)

wavelength

b)

crest

c)

trough

d)

amplitude

83.

What part of the transverse wave is letter D?

a)

trough

b)

wavelength

c)

crest

d)

amplitude

84.

The matter through which waves travel is called a ?

a)

amplitude

b)

wavelength

c)

medium

d)

crest

85.

___________ refers to the number of waves that pass a point in a certain amount of time.

a)

Frequency

b)

Crests

c)

Amplitude

d)

Rarefaction

86.

What is radiant energy?

a)

energy from the earth

b)

energy from heat

c)

energy given off by the sun

d)

energy from ocean waves

87.

The definition of the word refract is __________

a)

to make warm

b)

to go through

c)

to bend

d)

to create energy

88.

A ____________ object does allow a few light waves to pass through it.

a)

light

b)

translucent

c)

opaque

d)

long

89.

The louder the sound, the higher the ____________ of the wave.

a)

amplitude

b)

wavelength

c)

pitch

d)

compression

90.
What is a vacuum? 
a)
A space with only air in it
b)
A space with NO matter at all present
c)
A machine you use to do your chores
91.

1) Refraction happens when light______

a)

bends as it enters a new medium

b)

bounces back when it hits a surface

c)

by a substance

92.

Identify the following image as or refraction.

a)

Refraction

b)

Reflection

93.

Why does the straw appear to be bent?

a)

light is reflected

b)

light is absorbed

c)

light is turned

d)

light is refracted

94.
The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-
a)
absorbed
b)
stopped
c)
reflected
d)
refracted
95.

Reflection is when light...

a)

Bends

b)

Bounces

c)

Absorbs

d)

transmits

96.

The law of reflection states that

a)

Angle of incidence = Angle of reflection

b)

Angle of incidence = Angle of incidence

c)

Angle of reflection = Angle of translucence

d)

Angle of reflection = Angle of reflection

97.

The angle of reflection is

a)

90 degrees

b)

55 degrees

c)

45 degrees

d)

135 degrees

98.
The velocity of light in vacuum is _______ m/s
a)
3x108
b)
3x1012
c)
3x106
d)
3x1010
99.
How does light behave as it enters these mediums?
a)
continue its path as straight line.
b)
bends toward the normal
c)
bends away from the normal
d)
reflects
100.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
101.
A ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees. What is the angle of refraction? (air n=1, crown glass n=1.532)
a)
39.7 degrees
b)
19.2 degrees
c)
59.1 degrees
d)
12.3 degrees
102.
If the angle of incidence of light traveling through air, and then striking water is 30 degrees what is the angle of refraction? (n=1 air, n=1.33 water)
a)
15 degrees
b)
22 degrees
c)
43 degrees
d)
17 degrees
103.

What we call the final ray coming out of the glass slab?

a)

Incident ray

b)

Refracted Ray

c)

Reflected ray

d)

Emergent Ray

104.

When light passes from air into water at an angle of 60° from the normal, what is the angle of refraction?

a)

60°

b)

40.6°

c)

40°

d)

4.6°

105.

When light passes from water into diamond at an angle of 45° from the normal, what is the angle of refraction?

a)

20.9°

b)

20°

c)

22°

d)

22.9°

106.

A block of amber is placed in water and a laser beam travels from the water through the amber. The angle of incidence is 35° while the angle of refraction is 26°. What is the index of refraction of amber? If the refractive index of water is 1.33

a)

1.74

b)

1.88

c)

1.47

d)

1.50

107.
The speed of sound at 20 degrees celcius is:
a)
331 m/s
b)
365 m/s
c)
621 m/s
d)
343 m/s
108.
Sound does not travel in space because
a)
Space is too far away.
b)
There is no matter in space.
c)
Space is the final frontier
d)
Space has planets.
109.
Sound moves in a _________.
a)
Transverse wave
b)
Longitudinal wave
110.

Which of these sound waves has the highest frequency?

a)
b)
c)
111.
The volume of a sound is measured in units called ________
a)
decibels
b)
liters
c)
sound waves
d)
inches per minute
112.
A sound with a high frequency has a _____ pitch. A sound with a ____ frequency has a low pitch.
a)
high, low
b)
low, high
c)
medium, high
d)
high, medium
113.

The ______ of a sound depends on the medium through which it's moving.

a)

pitch

b)

vibration

c)

speed

d)

loudness

114.

Amplitude affects which characteristic of sound waves?

a)

frequency

b)

pitch

c)

loudness

d)

wave speed

115.

Which state of matter do sounds travel fastest in?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

116.

Roughly what is the speed of sound in glass?

a)

About 50 m/s

b)

About 1 500 m/s

c)

About 4 500 m/s

d)

About 1800 m/s

117.

A teacher bangs two bits of wood together. She hears an echo from a wall 0.14 seconds later. The wall is 25m away. What is the rough speed of sound, ACCORDING TO THESE RESULTS?

a)

Roughly 340 m/s

b)

Roughly 360 m/s

c)

Roughly 375 m/s

d)

Roughly 330 m/s

118.
Area of a longitudinal wave where particles are CLOSE together.
a)
Compression
b)
Rarefaction
119.
Short sound waves are...
a)
high pitched
b)
low pitched
c)
medium pitched
120.
When the car moves AWAY from you, its horn seems...
a)
Low pitched
b)
High pitched
c)
Normal
121.
When an ambulance move TOWARD you it sounds ________ pitched. 
a)
high
b)
low
c)
medium
122.
What can you tell about this object's motion?
a)
Moving to the North (up).
b)
Moving to the South (down). 
c)
Moving to the West (left). 
d)
Moving to the East (right). 
123.
What can you tell about the motion of this object?
a)
Moving left.
b)
Moving right quickly.
c)
Standing still. 
d)
Moving up slowly. 
124.

What is the Doppler Effect?

a)

A change in frequency due to the relative motion of a wave source and an observer

b)

When a wave overlaps with another wave

c)

When a wave bounces off of another object

d)

When a wave bends due to traveling through a different medium

125.

Look at the picture. Who is experiencing a higher pitched sound?

a)

Observer A

b)

Observer B

c)

There's no difference

126.

A car moves at 20 m/s away from a whistle. The whistle is stationary. The whistle makes a sound with a frequency of 500 Hz. The speed of sound in air is 330 m/s.


What is the frequency observed by the driver of the car?

a)

530 Hz

b)

470 Hz

c)

520 Hz

127.

You stand on the sidewalk next to the street. A fire truck is away from you. The frequency of the siren on the fire truck is 600 Hz.


What should you hear?

a)

Frequency higher than 600 Hz

b)

Frequency lower than 600 Hz

c)

Exactly 600 Hz

d)

No sound, silence.

128.

A car moves at 20 m/s towards a whistle. The whistle is stationary. The whistle makes a sound with a frequency of 500 Hz. The speed of sound in air is 330 m/s.


What is the frequency observed by the driver of the car?

a)

530 Hz

b)

470 Hz

c)

480 Hz

129.

An ambulance is moving towards a stationary listener at a constant speed of 30 m∙s-1 . The siren of the ambulance emits sound waves having a wavelength of 0,28 m. Take the speed of sound in air as 340 m∙s-1


Calculate the frequency of the sound waves emitted by the siren as heard by the ambulance driver.

a)

1 213  Hz1\ 213\ \ Hz

b)

1 214,29  Hz1\ 214,29\ \ Hz

c)

1 215  Hz1\ 215\ \ Hz

130.

An ambulance is moving towards a stationary listener at a constant speed of 30 m∙s-1 . The siren of the ambulance emits sound waves having a wavelength of 0,28 m. Take the speed of sound in air as 340 m∙s-1 .


Calculate the frequency of the sound waves emitted by the siren as heard by the listener.


Choose the correct answer.

a)


1331,80 Hz1331,80\ Hz

b)

1 332 Hz1\ 332\ Hz

c)

1 331,7 Hz1\ 331,7\ Hz

131.

A train approaches a station at a constant speed of  20 m.s−120\ m.s^{-1}  with its whistle blowing at a frequency of 458 Hz458\ Hz  . An observer, standing on the platform, hears a change in pitch as the train approaches him, passes him and moves away from him. 

Calculate frequency of the sound that the observer hear while the train is approaching him. Use the speed of sound in air as  340 m.s−1340\ m.s^{-1} .

a)


486,63  Hz486,63\ \ Hz

b)

487  Hz487\ \ Hz

c)

458  Hz458\ \ Hz

132.

The speed of sound is ____.

a)

below Mach 1

b)

Mach 1

c)

above Mach 1

d)

Mach 5

133.

Traveling 5 times faster than the speed of sound is ___.

a)

ultrasonic

b)

supersonic

c)

hypersonic

d)

crazy

134.

Sound with a frequency higher than humans can hear is ___.

a)

ultrasound

b)

supersonic

c)

hypersonic

d)

magic

135.

Bats, dolphins and some birds use ___ to navigate and find prey.

a)

supersonic

b)

sonar

c)

echolocation

d)

x-ray vision

136.

Humans use ______ for mapping the sea floor.

a)

echolocation

b)

sonar

c)

ultrasonography

d)

sonic booms

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