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Physics Final Exam Review GCA

Total questions: 109

Worksheet time: 4hrs 46mins

Name
Class
Date
1.
What is the speed of a car that traveled 32 m in 2 seconds?
a)
64 m/s
b)
34 m/s
c)
16 m/s
d)
0.0625 m/s
2.

Match the description to the graph:

"The car is stopped."

a)
b)
c)
d)
3.

Match the description to the graph:

"The car is accelerating."

a)
b)
c)
d)
4.

Match the description to the graph:

"The car is traveling forward at a constant speed."

a)
b)
c)
d)
5.

What does the slope represent on a position time graph?

a)

the distance traveled

b)

the displacement

c)

the velocity

d)

the acceleration

e)

I don't understand, I need more help

6.

Susan Storm creates a force field. In 0.5 seconds, the forcefield halted an arrow that was headed straight for her at 200 m/s. At what rate did the arrow accelerate?

a)

-400 m/s^2

b)

-100 m/s^2

c)

25 m/s^2

d)

+400 m/s^2

7.

Sort the measurements into categories. Use the picture if you need help.

Categorize the following

time

distance

speed

mass

velocity

displacement

acceleration

weight

force

Scalar
Vector
8.

Sort each measurement into its correct category.

Categorize the following

30 seconds

the snail slithered 90 cm yesterday

the speedometer reads 30mph

the snail has a mass of 2 grams

the snail ended up 20 cm from its starting point

the car travelled at 30mph due west

the rock fell, accelerating at 9.8 m/s^2

The snail's weight is 0.196 N

Scalar
Vector
9.

As Spider-Man takes off from rest, he accelerates at 6 m/s^2. What is his displacement after 2 seconds? (only type in a number)

10.
A car moved 60 km East and 90 km West. What is the displacement and the direction?
a)

30 km West

b)

60 km East

c)
90 km
d)
150 km
11.

Which side is adjacent to angle alpha?

a)

17

b)

15

c)

8

12.
What is the y component of the vector given in the diagram?
a)
77N
b)
92N
c)
120N
d)
60N
13.

This monkey has a weight of 100 N. How much tension is in each of his arms?

a)

50 N

b)

100 N

c)

10 N

d)

200 N

14.

The tightrope makes a 20° angle with the horizontal. Half of the person's 600 N weight creates the vertical force (Fy = 300N) on the tightrope. What is the tension in the tightrope?

a)

282 N

b)

103 N

c)

319 N

d)

877 N

15.

Based on the picture, how would you find the horizontal component of the soccer ball's velocity?

a)

20sin⁡(30°)20\sin\left(30\degree\right)  

b)

20cos⁡(30°)20\cos\left(30\degree\right)  

c)

20tan⁡(30°)20\tan\left(30\degree\right)  

d)

30sin⁡(20°)30\sin\left(20\degree\right)  

16.

At the point with the arrows drawn, the frog is moving to the right at 40 cm/s and upward at 9 cm/s. What is the resultant velocity of the frog?

a)

1680 cm/s

b)

31 m/s

c)

49 cm/s

d)

41 cm/s

17.

The SI unit of weight is

a)

kg

b)
N
c)
pounds
d)

kgm/s

18.

A car is rounding a bend as shown in the diagram. Which arrow correctly shows the direction of the car's centripteal force?

a)

A

b)

B

c)

C

d)

D

19.
A horse gallops around a circular arena.  The centripetal force on the horse is ___.
a)

directed outward

b)

tension

c)

directed toward the center of the arena

d)

9.8 N

20.

Which of the following FBD is correct for the car at point A?

a)

b)

c)

d)

21.

Which of the following FBD is correct for the car at point C?

a)

b)

c)

d)

22.

A 50 kg skater pushes off from a wall with a force of 200 N. What is the skater’s acceleration?

a)

200 / 50 = 4 m/s2

b)

50 / 200 = 0.25 N

c)

200 x 50 = 10,000 m/s2

d)

200 / 50 = 4 N

23.

A force of 90N is applied to each cart, which one will accelerate the fastest?

a)
Cart 1
b)
Cart 2
c)
Cart 3 
d)
Cart 4
24.

Calculate the net force.

a)

0 N

b)

5 N right

c)

+15 N

d)

5 N left

25.
Objects with greater _________ also have greater inertia.
a)

velocity

b)
mass
c)

acceleration

d)

speed

26.

A 20 kg bike accelerates at 0.5 m/s2.  The net force is

a)

0.025 Newtons

b)
20 Newtons
c)

10 Newtons

d)

40 Newtons

27.

If I double the distance between two objects, what happens to their gravitational force?

a)
4x bigger
b)
4x smaller
c)
2x bigger
d)
2x smaller
28.

What happens to gravitational force if I triple both of the masses but don't change their distance?

a)

triples

b)

a third as big

c)

9x bigger

d)

9x smaller

29.

Two asteroids exert a gravitational force, F, on each other. Some time later, the asteroids are now 9 times as far from each other as before. Which of the following represents the gravitational force at this distance?

a)

F/3

b)

F/9

c)

F/81

d)

F/4.5

30.
The work-kinetic energy theorem says that the net work done by all the forces acting on an object is equal to the change in the object's _____.
a)
mechanical energy
b)
work
c)
momentum
d)
kinetic energy
31.
What is the work done when a 20-N force pushes a cart 3.5 m?
a)
70J
b)
6.8J
c)
23.5J
d)
17.5J
32.
Which of the following is the best example of work being done. 
a)
doing homework
b)
lifting a box
c)

pushing on a stationary car

d)
holding a box
33.

In which of these cases is work being done?

a)

A student sleeps

b)

A student pushes a locked door that does not move

c)

a student pushes his rolling chair into another room

d)

A student sits on the carpet

34.

SP3.c

This weight lifter used 1030 Newtons of force to lift the weights to a height of 2.3 m in 5.5 seconds. If he repeated the lift but in 11 s, how would his power change?

a)

power will quadruple

b)

Power will stay the same

c)

Power would double

d)

Power would be half

35.

SP3.c

This weight lifter used 1030 Newtons of force to lift the weights to a height of 2.3 m in 5.5 seconds. He the repeated the lift but with twice the mass and twice the force. How did his power change?

a)

power will quadruple

b)

Power will stay the same

c)

Power would double

d)

Power would be half

36.

If you increase your work and decrease your time, you will have

a)

more power

b)

less power

c)

same amount of power

d)

power rating can not be determined

37.

SP3.d

A 5 N force is applied to a 0.2 kg ball to slow it down from 0.8 m/s to 0 m/s. What is the impulse on the ball?

a)

-2.5 N⋅s

b)

-4 N⋅s

c)

-0.16 N⋅s

d)

-1 N⋅s

38.

SP3.d

A 5 N force is applied to a 0.2 kg ball to slow it down from 0.8 m/s to 0 m/s. How much time did it take for the dog to slow down the ball?

a)

2.5 s

b)

4 s

c)

0.032 s

d)

1 s

39.

An egg is thrown at a wall (not shown) and at a bed sheet. The force of impact will be

a)
Greater against the wall
b)
Greater against the sheet
c)
Force is equal
40.

An egg is thrown at a wall (not pictured) and at a bed sheet. Both eggs come to a complete stop. The egg's impulse will be

a)

Greater for the wall collision

b)

Greater for the sheet collision

c)

impulse is equal

41.

Wearing a safety helmet is an effective way to protect your head from injury. In order for the force to ___________ on impact, the time to bring your head to a stop must ____________. This is done through adding padding in the helmet.

a)

decrease; increase

b)

increase; decrease

c)

increase; increase

d)

decrease; decrease

42.
When the frequency of a wave increases, what happens to the wavelength?
a)
The wavelength is not directly affected by the frequency of a wave.
b)
The wavelength increases.
c)
The wavelength decreases.
d)
More specific information is needed to form a conclusion about the wavelength.
43.
Which wave has a greater frequency?
a)
A
b)
B
44.
High frequency waves have _________ wavelength.
a)
varying
b)
high
c)
the same
d)
low
45.
Which kind of wave has the greatest frequency?
a)
gamma rays
b)
infrared
c)
ultraviolet
d)
microwaves
46.

Which wave behavior do noise cancelling headphones use?

a)

diffraction

b)

refraction

c)

constructive interference

d)

destructive interference

47.

How does the Doppler effect explain the sound you hear when a race car comes toward and then passes a camera?

a)

The pitch is higher as it approaches and then becomes lower the

moment it passes.

b)

The pitch is lower as it approaches and then becomes higher the

moment it passes.

c)

The sound is louder as it approaches and then becomes softer the

moment it passes.

d)

The sound is softer as it approaches and then becomes louder the

moment it passes.

48.

Widely spaced sound waves are

a)

high pitched

b)

low pitched

c)

medium pitched

49.

The energy of a photon is based on its

a)

velocity

b)

speed

c)

amplitude

d)

frequency

50.

What's happening at A where the wave is brightest?

a)

Two crests are combining to create constructive interference.

b)

A crest and a trough are combining to create destructive interference.

c)

Two crests are combining to create destructive interference.

d)

A crest and trough are combining to create constructive interference.

51.

Which part of the electromagnetic spectrum has the highest energy photons?

a)

Gamma

b)

X-rays

c)

Microwaves

d)

Radio

52.

Match the phenomenon to the picture.

a)

1.

interference

b)

2.

refraction

c)

3.

polarization

d)

4.

reflection

e)

5.

double slit diffraction

53.

Match the phenomenon to the picture.

a)

1.

interference

b)

2.

Doppler effect

c)

3.

polarization

d)

4.

diffraction

e)

5.

standing waves

54.

EM (light) waves travel

a)

faster in solids.

b)

faster in liquids.

c)

faster in gases.

d)

at the same speed in all media.

55.

Sound waves travel

a)

faster in solids.

b)

faster in liquids.

c)

faster in gases.

d)

at the same speed in all media.

56.
When 2 waves meet and there amplitude increases it is known as what?
a)
Constructive Interference
b)
Amplitude Addition
c)
Positive Interference
d)
Destructive Interference
57.

This wave interaction changes the speed of the wave.

a)

reflection

b)

refraction

c)

diffraction

d)

interference

58.

An earthquake wave has a frequency of 0.238 Hz and moves energy at 4000 m/s, what is the wave's wavelength?

a)

1,008,000 m

b)

16,807 m

c)

952 m

d)

15.9 m

59.

A beam of light has a wavelength of 600 nm in air. What is the frequency of the light (c = 3x108 m/s)?

a)

5 x 1014 Hz

b)

2 x 1014 Hz

c)

3 x 1014 Hz

d)

6 x 1014 Hz

60.

How fast do radio, infrared, visible light, and x-rays travel through space?

a)

9x10^9 m/s

b)

v = 343 m/s

c)

c = 3x10^8 m/s

d)

6.67 x 10^-11 m/s

61.
When an object is placed on the focal point in front of a convex lens, the image produced is ___.
a)
real, reduced, and inverted
b)
real, enlarged, and inverted
c)
real, true, and inverted
d)
There is no image
62.

When an object is placed beyond C of a concave mirror, the image produced is ___.

a)

real, smaller, and inverted

b)

real, larger, and inverted

c)

virtual, larger, and upright

d)

virtual, smaller, and upright

63.

If an object is placed at a point 2F in front of a converging (convex) lens. Check the three properties that correctly describe the image.

a)

Real

b)

Inverted

c)

Same Size

d)

Virtual

e)

Upright

64.

An object is placed between F & 2F in front of a diverging (convex) mirror. Check 3 properties of this image.

a)

Real

b)

Upright

c)

Larger

d)

Smaller

e)

Virtual

65.

A converging lens has a focal length of 27 cm. A cat is placed 40 cm from the lens. Locate the image.

a)

83 cm

b)

0.012 cm

c)

1.48 cm

d)

1000 cm

66.

A cat is stuck in a tree. The tree is located 40 m from the diverging mirror. The convex mirror has a focal length of -25m. Locate the image.

a)

-0.65 m

b)

15 m

c)

-15.4 m

d)

1.6 m

67.

When light enters a medium that is less optically dense, the light speeds up and the angle gets

a)

bigger.

b)

smaller.

68.

Light enters a pool at a 33° angle. (air --> water) What is the angle of refraction?

a)

24.2°

b)

46.4°

c)

90°

d)

33°

69.

Can each produce a virtual image?

Categorize the following

plane mirror

convex lens

concave lens

convex mirror

concave mirror

electromagnet

Yes, it can produce a virtual image.
No, it cannot produce a virtual image.
70.

Can each produce a real image?

Categorize the following

plane mirror

convex lens

concave lens

convex mirror

concave mirror

electromagnet

Yes, it can produce a real image.
No, it cannot produce a real image.
71.

Light travels from air (n = 1.00) into a second material. The incident ray of light hits the surface at angle of 64o and the refracted ray enters the second material at an angle of 32o. What is the index of refraction of the second material? n1sin(Θ1) = n2sin(Θ2)

a)

1.4

b)

0.90

c)

0.53

d)

1.7

72.

As two oppositely charged particles approach each other, what happens to the electrical force between them?

a)

The attractive force increases

b)

The magnitude of the electric force decreases

c)

The repulsive force increases

d)

The magnitude of their charges increases

73.
If each of the charges doubles, what happens to the force?
a)
Quadruples
b)
Doubles
c)
Stays the same
d)
Reduced by half
74.

Coulomb's law says that the force between any two charges depends

a)

directly on the size of the charges

b)

inversely on the square of the distance between the charges

c)

both are correct

75.

Gravitational Force:Mass==Electrical Force:_____

a)
protons
b)
neutrons
c)
electrons
d)
charges
76.

Gravitational forces are ____ equivalent electrostatic forces.

a)

larger than

b)

equal to

c)

smaller than

d)

sometimes larger and sometimes smaller than

77.
Walking across a carpet is an example of charge being transferred by
a)
friction.
b)
induction.
c)
contact.
d)
static electricity
78.

Which of these is an example of charging by induction?

a)

Rubbing a neutrally charged ballon on a sweater

b)

Moving your negatively charged finger toward a doorknob

c)

Touching a neutrally charged doorknob

d)

Placing two negatively charged balloons close to each other

79.

Bending water when a charged balloon is brought close is an example of what type of charging

a)

friction

b)

insulation

c)

conduction

d)

induction

80.

Transferring a charge by touching is ___

a)

conduction

b)

induction

c)

grounding

d)

friction

81.

The equivalent resistance of the following circuit is...

a)

9.23 Ω

b)

90 Ω

c)

60 Ω

d)

70 Ω

82.

The equivalent resistance of the following circuit is(R1= 20 Ω, R2=50 Ω)...

a)

70 Ω

b)

30 Ω

c)

14.3 Ω

d)

23.4 Ω

83.
The total resistance of this circuit is 
a)
25.7 ohms
b)
315 ohms
c)
324 ohms
d)
90 ohms
84.

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

a)

1/4 A

b)

144 A

c)

4 A

d)

0.4 A

85.

What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?

a)

12 V

b)

21 V

c)

4/3 V

d)

3/4 V

86.

How many 3V batteries would you need to produce a 0.5 A current through a 24 Ω resistor?

a)

16

b)

12

c)

1

d)

4

87.

How many Joules of energy does a 150 Watt fan use up in an hour (3600 s)?

a)

0.0417 J

b)

24 J

c)

540,000 J

d)

3750 J

88.

What did the student do in the picture to induce electricity and move the galvanometer away from 0? A galvanometer measures amps.

a)

nothing

b)

move the magnet

c)

add more loops of wire

d)

unplug the galvnonmeter

89.
What would increase the strength of an electromagnet?
a)

Increasing the amount of current flowing through the wire.

b)

Inserting a wooden core inside the coil

c)

Changing the direction of the current

d)

Decreasing the number of coils of wire

90.
What happens to the strength of an electromagnet as you add more coils around it?
a)
Increases
b)
Decreases
c)
Stays the same
d)
Stops completely
91.

In an electrical generator, the energy transformation begins as ___________ and becomes ____________.

a)

mechanical; electrical

b)

electrical; mechanical

c)

electrical; chemical

d)

mechanical; chemical

92.

A device that transforms electric energy to mechanical or kinetic energy is a

a)

generator

b)

motor

c)

transformer

d)

magnet

93.

What device is shown in the picture?

a)

Generator

b)

Motor

c)

Transformer

d)

Circuit

94.

Why does this simple electric motor work?

a)

The current from the battery induces a magnetic field in the copper loop, turning it into an electromagnet that repels from/attracts the stationary magnet.

b)

The electromagnet on top of the battery pulls on the magnetic copper wire

c)

The magnet induces a current in the copper loop which makes it rotate.

d)

The magnetic field from the battery induces an electric current in the copper loop, turning it into an electromagnet that repels from/attracts to the permanent magnet

95.
Where does fusion occur naturally?
a)
Underwater
b)
All around us
c)
In the radioactive waste
d)
On the sun
96.
This is an example of ---
a)
Radioactive Decay
b)
Nuclear Fission
c)
Nuclear Fusion
d)
Fossil fuel reaction
97.

Order the nuclear radiation from most penetrating ability to least.

a)
Alpha , Beta,  Gamma
b)
Beta , Gamma , Alpha
c)
Gamma, Beta, Alpha
d)
Gamma, Alpha, Beta
98.

Which type of reaction does the diagram illustrate?

a)

Fission

b)

Fusion

c)

Alpha Decay

d)

Beta Decay

99.

Alpha Decay

a)

b)

c)

100.

What is the most dangerous form of radioactive decay?

a)

Alpha

b)

Beta

c)

Gamma

101.

Which form of radiation can be stopped by something as thin as a sheet of paper?

a)

Alpha

b)

Beta

c)

Gamma

102.
A material that can stop gamma radiation is
a)
lead
b)
jello
c)
sunscreen
d)
wood
103.
After the third half-life, how much of the sample is left?
a)
1/2
b)

1/4

c)
1/16
d)
1/8
104.
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
a)
3.0g
b)
0.25mg
c)
0.3g
d)
0.25g
105.
If the half-life of uranium-232 is 70 years, how many half-lives will it take for 10 g of it to be reduced to 1.25 g?
a)
1 half-life
b)
2 half-lives
c)
3 half-lives
d)
4 half-lives
106.

The diagram shows 32 atoms.

16 of the Red are parent isotopes

16 of the Green are daughter isotopes

How many half-lives have occurred?

a)

0

b)

1

c)

2

d)

3

107.

This equation shows the radioactive decay of thorium (Th). Which of the following particles is released in this reaction?

a)

alpha

b)

beta

c)

neutron

d)

gamma

108.
a)

it's 88 because element X gains 2 protons

b)

it's 218 because element X loses 2 protons and 2 neutrons

c)

it's 220 because element X loses 2 neutrons

d)

it's 226 because element X gains 2 protons and 2 neutrons

109.
What particle completes this reaction?
a)
alpha particle
b)
beta particle
c)
gamma particle
d)
neutron

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