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Physics Final Exam Review

Total questions: 64

Worksheet time: 2hrs 19mins

Name
Class
Date
1.

_____________ is the band of light that causes sunburns.

a)

Infrared

b)

Ultraviolet

c)

Visible

d)

X-ray

2.

The sky is blue because...

a)

the ocean absorbs blue.

b)

blue light is the shortest wavelength and passes with the least absorption in the sky.

c)

blue light is the longest wavelength and passes with the most absorption in the sky.

d)

the ocean reflects blue.

3.

What type of rays can kill you with only a small dosage?

a)

Radio waves

b)

X-rays

c)

Microwaves

d)

Gamma rays

4.
30 m/sec, East. Scalar or Vector
a)
Scalar
b)
Vector
c)
Neither
5.
Wind blowing at 20 mph.Vector or scalar?
a)
Scalar
b)
Vector
6.
Distance
a)
Vector
b)
Scalar
7.
Displacement
a)
Vector
b)
Scalar
8.
The graph respresents
a)
No motion
b)
Constant Velocity
c)
Acceleration
d)
Deceleration
9.
Displacement and distance are always the same number.
a)
True
b)
False
10.

Which option is the correct unit of measurement for energy?

a)

Joule (J)

b)

Kilogram (kg)

c)

Newton (N)

d)

Jewel (je)

11.

TRUE or FALSE. Potential energy is stored energy. It is relative to its position and location.

a)

True

b)

False: Potential energy is energy in motion.

12.

Pick the correct formula to calculate for Potential Energy.

a)

PE = 1/2mv2

b)

PE = mgh

c)

m = PE/gh

d)

h = PE/mg

13.
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
14.

Pick the correct formula to solve for Kinetic Energy.

a)

KE = 1/2mv2

b)

KE = mgh

c)

KE = d/t

d)

v2 = 2KE/m

15.

According to which law of energy, energy can't be created or destroyed?

a)

First law of motion

b)

The law of tacos

c)

Law of Energy

d)

Law of conservation of energy

16.

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

17.
Speed is equal to 
a)
Distance/Time
b)
Time/Distance
c)
Time x Distance
d)
Acceleration
18.
What is Force measured in?
a)
Newtons
b)
Kilograms
c)
Joules
d)
Meters
19.
In the formula 
W = F * d
what is distance measured in?
a)
Newtons
b)
Feet
c)
Meters
d)
Whatever you want
20.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
21.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
22.
Determine the momentum of 1000-kg car moving northward at 20 m/s......... 
a)
20000 N
b)
20000 Joules
c)
20000 Kg * m/s
d)
20000 kg * m/s north
23.
The definition of momentum is
a)
Mass in Motion
b)
The size of an object
c)
The velocity of an object
d)
A comparison between two objects
24.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
25.
A 9 kg blob moving at 5 m/s collides and sticks to a second blob with a mass of 5 kg. If the two bobs stick together, what will the velocity of the two blobs move at?
a)
3.57 m/s
b)
3.2 m/s
c)
10.0  m/s
d)
9.0  m/s
26.
A 9300 kg railroad car traveling at a velocity of 5 m/s strikes a second boxcar that weighs 5000 kg at rest. At what speed will the second boxcar move?
a)
18.6 m/s
b)
9.3 m/s
c)
7.5 m/s
d)
1.86 m/s
27.
A runner has a momentum of 720 kg m/s and is traveling at a velocity of 5 m/s. What is his mass?
a)
14.4 kg
b)
1400 kg
c)
144 kg
d)
360 kg
28.
Two football players with mass 75 kg and 100 kg run directly toward each other with speeds of 6 m/s and 8 m/s respectively. If they grab each other as they collide, the combined speed of the two players just after the collision would be:
a)
2 m/s 
b)
3.4 m/s 
c)
4.6 m/s 
d)
7.1 m/s
29.
An open cart on a level surface is rolling without frictional loss through a vertical downpour of rain. As the cart rolls, an appreciable amount of rainwater accumulates in the cart. The speed of the cart will
a)
increase because of conservation of mechanical energy
b)
decrease because of conservation of momentum
c)
decrease because of conservation of mechanical energy
d)
remain the same because the raindrops are falling perpendicular to the direction of the cart's motion
30.

A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.

a)

-2.5

b)

-10

c)

-18

d)

-45

31.
The difference between a car hitting a wall vs. a car hitting a hay stack is
a)
the Impulse on the car hitting the wall is greater
b)
the change in momentum of the car hitting the wall is greater
c)
the force on the car hitting the hay stack is greater
d)
the collision time of the car hitting the hay stack is greater
32.
The units for Impulse are
a)
N/s
b)
N.s
c)
N
d)
m/s
33.
The purpose of crumble zones on a car is to
a)
decrease time of impact.
b)
increase force of impact.
c)
increase the time of impact.
d)
decrease the impulse during impact.
34.
The velocity of a 975-kg car is changed from 12.0 m/s to 27.0 m/s in 15s by an external, constant force. What is the magnitude of the force? 
a)
9.75×102 N
b)
1.46×104 N
c)
9.75×103 N
d)
975 kg·m/s
35.

Areas of increased pressure on a sound wave are known as a ----

a)

Rarefaction

b)

Compression

c)

Frequency

d)

Amplitude

36.

The distance from the beginning of one compression to the beginning of the next compression is called a -----

a)

Rarefaction

b)

Frequency

c)

Wavelength

d)

Compression

37.

The unit for measuring frequency is the ---

a)

Joule

b)

Hertz

c)

Gram

d)

Newton

38.

The measure of the amount of energy in a wave is ----

a)

Wavelength

b)

Hertz

c)

Frequency

d)

Amplitude

39.

Sonar and echolocation use ----- to detect objects under water.

a)

Refraction

b)

Reflection

40.

The Tacoma Narrows Bridge, musical instruments, and crystal stemware are examples of -----

a)

Frequency

b)

Resonance

c)

Interference

d)

Speed

41.
A wave transfers
a)
energy
b)
water
c)
paricles
d)
air
42.
A wave that moves the medium in the same direction that the wave travels is a
a)
transverse wave
b)
longitudinal wave
c)
standing wave
d)
mechanical wave
43.
The distance between one crest and the next crest is the wave's
a)
amplitude
b)
wavelength
c)
frequency
d)
speed
44.
the number of complete waves that pass a point in a certain amount of time is a wave's
a)
amplitude
b)
frequency
c)
wavelength
d)
speed
45.
A point of zero amplitude on a standing wave is called a
a)
crest
b)
node
c)
trough
d)
antinode
46.
Electromagnetic waves are transverse waves that transfer
a)
sound energy.
b)
photons.
c)
electrical and magnetic energy.
d)
the particles of a mediu.
47.
Which portion of the electromagnetic spectrum includes the range of light that can be detected by the human eye? 
a)
ultraviolet light
b)
visible light
c)
infrared light
d)
x-rays
48.
Cell phones and televisions use this type of EM wave.  It has the longest wavelength with the lowest frequency.
a)
radio wave
b)
tv wave
c)
Gamma wave
d)
ultra violet
49.
The highest point of  a transverse wave
a)
crest
b)
trough
c)
amplitude
d)
wavelength
50.
A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball? 
a)
77 J
b)
7.7 J 
c)
0.7 J 
d)
770 J 
51.
You do 90 joules of work in 30 seconds. How much power have you generated?
a)
30 watts
b)
3 watts
c)
120 watts
d)
270 watts
52.
F=200 N
d=50 m
w=??
a)
4 J
b)
0.25 J
c)
250 J
d)
10,000 J
53.
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
54.
W = 500 Joules 
t = 25 seconds
P = ???
a)
0.05 W
b)
20 W
c)
12500 W
d)
2000 W
55.
How much time is needed to produce 720 Joules of work if 90 watts of power is used? 
a)
0.125 s
b)
8 s
c)
64800 s
d)
80 s
56.
A person weighing 600 N gets on an elevator. The elevator lifts the person 6 m in 10 seconds.  How much power was used?
a)
360 W 
b)
60 W
c)
3600 W
d)
600 W
57.

Which of the following is the best example of work being done.

a)

doing homework

b)

lifting a box

c)

pushing a stationary box

d)

holding a box

58.
How far does a car that weighs 5,000 N go if 18,000 J of work is done on it?
a)
3.8 m
b)
3.7 m
c)
3.2 m
d)
3.6 m
59.

An 80 kg skier stands at the top of a 40 meter slope. What is her gravitational potential energy before she skies down the slope?

a)

3200 J

b)

31,360 J

c)

15,680 J

d)

19.6 J

60.

If two rocks are launched through the air at the same speed, but one has twice as much mass as the other, how do their kinetic energies compare?

a)

The kinetic energy of the two rocks is the same because they have the same speed

b)

The rock with the greater mass will only move a small distance and then fall straight to the ground

c)

The two rock could not have the same speed if they have different masses

d)

The rock with the greater mass has more kinetic energy than the rock with less mass even though they are traveling at the same speeds because both mass and speed affect kinetic energy.

61.
The bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not penetrate
a)
A. refraction
b)
B. reflection
c)
C. resonance
d)
D. standing wave
62.
This wave has the second highest frequency on the spectrum. 
a)
microwaves
b)
visible light
c)
x-rays
d)
gamma ray
63.
A tuning fork starts to vibrate when a certain note is played on the piano, This is an example of _______.
a)
resonance
b)
refraction
c)
diffraction
d)
reflection
64.
This image is representing what wave interaction?
a)
Refraction
b)
Diffraction
c)
Reflection
d)
Interference

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