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Physics Final Exam Review

Total questions: 80

Worksheet time: 3hrs 31mins

Name
Class
Date
1.

If a net (unbalanced) force is applied to an object

a)

the object moves with constant velocity

b)

the object accelerates

c)

the object remains stationary

d)

its impossible to have a net force on an object

2.

The mass of the object remains the same even if the object is taken to the moon, or Jupiter, or under water.

a)

True

b)

False

3.

A 30 Newton force east is applied to a crate and a 10 Newton force west is applied to the same box.  What is the net force on the box?

a)

30 N east

b)

10 N west

c)

20 N east

d)

40 N east

4.

A tennis ball and a solid steel ball of the same size are dropped from the same height.  In the absence of air resistance, which ball has the greater acceleration?

a)

The steel ball

b)

The tennis ball

c)

Neither has any acceleration

d)

They have the same acceleration

5.

If a 25 kg box A is placed on a horizontal surface, and an identical box B is placed on a slide which has an angle of 32° from horizontal, how do the normal forces of the boxes compare?

a)

the normal forces are the same and are both zero

b)

the normal forces are the same and are non-zero

c)

the normal force of box A is greater than the normal force of box B

d)

the normal force of box B is greater than the normal force of box A

6.

If the net force acting on a cart doubles, what happens to the cart’s acceleration?

a)

it quadruples

b)

it halves

c)

it doubles

d)

it quarters

7.

 Jane has a mass of 40 kg. She pushes on a 50 kg rock with a force of 100 N. What force does the rock exert on Jane?

a)

400 N

b)

500 N

c)

-100 N

d)

-500 N

8.

Newton’s second law of motion is represented by:

a)

a = mg

b)

F = a Δ\Delta  v

c)

d = 1/2(g)t 2^2   

d)

F = ma

9.

Your mass on Earth is 105 kg.  On the imaginary planet Krypton, you weigh 

1175 N.  What is the acceleration of gravity on Krypton?

a)

9.8 m/ s2s^2  

b)

11.2 m/ s2s^2  

c)

20 m/ s2s^2  

d)

0.098 m/ s2s^2  

10.

Sound waves cannot travel in

a)

a vacuum

b)

air

c)

water

d)

steel

11.

A Doppler effect occurs when a source of sound moves

a)

towards you only

b)

away from you only

c)

both towards and away from you

d)

neither towards nor away from you

12.

An unfortunate bug has a mass of 9.9 g, and collides with a car with a mass of 990 kg. How does the force on the bug compare with the force on the car?

a)

The force on the bug is greater than the force on the car.

b)

The force on the car is greater than the force on the bug.

c)

The force on the bug and the force on the car are the same.

d)

There is no force on either the bug or the car.

13.

  An unfortunate bug has a mass of 9.9 g, and collides with a car with a mass of 990 kg.  How does the acceleration of the bug compare to the acceleration of the car during the collision?

a)

The acceleration on the bug is greater than the acceleration on the car.

b)

The acceleration on the car is greater than the acceleration on the bug

c)

The acceleration on the bug and the acceleration on the car are the same.

d)

There is no acceleration on either the bug or the car.

14.

During which of the following time intervals is no net force applied to the object?

a)

A - B

b)

B - C

c)

C - D

d)

E - F

15.

 During which of the following time intervals in which there is a positive net force applied to the object?

a)

A - B

b)

B - C

c)

D - E

d)

F - G

16.

During what time interval is the object moving with a constant velocity?

a)

A - B

b)

C - D

c)

E - F

d)

F - G

17.

The horizontal component of a projectile’s velocity:

a)

cannot be calculated

b)

increases with time.

c)

decreases with time.

d)

remains unchanged the entire time.

18.

Which of the following equations cannot be used to calculate the time it takes for an object to fall a given distance?

a)

d = ½ gt 2^2  

b)

d = vit + ½ gt2gt^2   

c)

  a = Δv/Δt

d)

v = Δd/Δt

19.

The vertical component of a projectile’s velocity:

a)

cannot be calculated

b)

decreases then increases with time.

c)

decreases with time.

d)

remains unchanged the entire time.

20.

The pitch of a musical sound depends on the sound wave's:

a)

wavelength

b)

amplitude

c)

frequency

d)

speed

21.

Sound is an example of

a)

 a longitudinal wave

b)

 a wave that can travel through a vacuum.

c)

a transverse wave

d)

a wave that does not transmit energy.

22.

The vibrations of a transverse wave move

a)

 in the same direction as the wave travels.

b)

 at right angles to the direction of wave travel.

c)

above and below the moving wave.

d)

opposite to the direction of wave travel.

23.

Sound travels fastest in

a)

air

b)

water

c)

steel

d)

sound travels the same speed in all of these

24.

 The amplitude of the wave in the diagram below is given by letter ______.

a)

A

b)

B

c)

C

d)

D

25.

Indicate the interval which represents one full wavelength in the wave diagram below.

a)

A - C

b)

B - D

c)

A - G

d)

A - E

26.

The speed of any wave depends upon

a)

its energy

b)

the medium through which it travels.

c)

 its angle of reflection.

d)

its amplitude.

27.

 Which factor(s) affect the period of a pendulum?

a)

mass of the bob only

b)

amplitude of the swing and length of the string

c)

length of the string and gravity

d)

amplitude of the swing only

28.

Which sketch below correctly shows what happens when waves A and B intersect.

a)
b)
c)
d)
29.

Force is measured in:

a)

Kg•m

b)

Newton

c)

Watt

d)

Joule

30.

Joe can easily lift an 80 N rock using a lever.  If he pushes down with 10 N of force, the rock goes up 0.1 m.  How far did his end of the lever move?

a)

10 m

b)

8 m

c)

1 m

d)

0.8 m

31.

An object which has kinetic energy (KE) must be:

a)

moving

b)

falling

c)

at rest

d)

above the ground

32.

A bow is drawn so that it has 40 J of PE.  When fired, the arrow will ideally have:

a)

Less than 40 J of KE

b)

More than 40 J KE

c)

  40 J of KE

d)

 0 J of KE

33.

A 2 kg mass has 40 J of PE.  Approximately how far off the ground is it?

a)

1 m

b)

2 m

c)

3 m

d)

4 m

34.

At the same moment that a baseball is thrown horizontally by a pitcher, a ring drops vertically off his hand.  Which statement about the baseball and the ring is correct, neglecting air resistance?

a)

They both hit the ground at the same time.

b)

The ring hits the ground first.

c)

The baseball hits the ground first.

d)

Neither one hits the ground at all because there is no air resistance.

35.

The diagram shows a 20 N force pulling an object of a hill at a constant rate of 2 m/s.  What is the mechanical advantage of this ramp?

a)

3

b)

0.3

c)

30

d)

10

36.

Refraction is caused by:

a)

bending

b)

displaced images

c)

different wave speeds

d)

more than one reflection

37.

If a ray of light strikes the surface of water at the critical angle, the angle of refraction of that ray of light is:

a)

180 °\degree   

b)

90 °\degree  

c)

45 °\degree  

d)

not enough information to determine

38.

A virtual image is:

a)

upright

b)

able to be projected on a screen

c)

larger

d)

inverted

39.

An airbag and crumple zones are built into all new cars.  What purpose do they serve?

a)

They are expensive to install so car companies can charge more for their cars.

b)

They are expensive to fix so car companies can charge more for repairs.

c)

They increase the force needed to stop the car so the person inside is safer.

d)

They increase the time it takes for the car to come to a stop so the person inside is safer.

40.

The sketch below represents a ray of light traveling from medium x to air.  What is the index of refraction for medium X?

a)

0.5

b)

2.0

c)

1.7

d)

0.58

41.

Which of the following is a secondary color of light?

a)

red

b)

blue

c)

green

d)

yellow

42.

If I shine cyan light on red paper, what color will you see?

a)

red

b)

black

c)

cyan

d)

violet

43.

When light reflects off of a mirror, the angle of reflection is:

a)

Equal to the angle of incidence

b)

Half the angle of incidence

c)

 twice the angle of incidence

d)

unrelated to the angle of incidence

44.

The speed of light in a vacuum is:

a)

3.0 x 10 8^8   m/s

b)

 2.5 x 10 8^8   m/s

c)

3.0 x 10 10^{10}   m/s 

d)

1.0 m/s

45.

This free body diagram represents an object that is:

a)

sitting still on a table or surface

b)

falling in the real world with air resistance

c)

on a table moving rightward with constant velocity

d)

on a table accelerating rightward

46.

Energy is measured in:

a)

Watts

b)

Degrees Celsius

c)

Newtons

d)

Joules

47.

Why is the sky blue?

a)

It is reflecting the blue oceans

b)

It is painted

c)

The atmosphere scatters red light

d)

The atmosphere scatters blue light

48.

What type of nuclear change is shown?

a)

nuclear fusion

b)

nuclear fission

c)

alpha decay

d)

beta decay

49.

What is the mechanical advantage of the pulley system shown?

a)

0

b)

1

c)

2

d)

3

50.

A 10 kg box sits on a 5 m high shelf. How much kinetic energy (KE) does it have?

a)

0 J

b)

5 J

c)

10 J

d)

500 J

51.

A 10 kg box sits up on a 5 m high shelf. How much potential energy (PE) does the box have?

a)

10 J

b)

50 J

c)

2 J

d)

500 J

52.

A vector quantity is a measure with

a)

magnitude

b)

direction

c)

both magnitude and direction

d)

a crazy supervillian

53.

The formula v = ΔdΔtv\ =\ \frac{\Delta d}{\Delta t} can be used

a)

to find the speed of falling objects

b)

to find the speed of objects with constant velocity

c)

to find the speed of objects turning a corner

d)

to find the height a projectile will reach.

54.

True or False: a net force is required to keep an object moving.

a)

true because because otherwise it would slow down

b)

false because objects in motion tend to remain in motion

c)

true because nothing moves without a net force

d)

false because a net force would help it move at a constant velocity.

55.

When a ball is dropped it falls with a constant velocity until it strikes the ground.

a)

true

b)

false

56.

The acceleration of gravity is

a)

dependent on the planet we are standing on only

b)

equal to - 10 m/s 2^2    on Earth only

c)

varying over time depending on how many people are on the ground.

d)

dependant on the planet and equal to -10 ms2\frac{m}{s^2}   on Earth

57.

The correct label for velocity in physics is:

a)

m/s 2^2  

b)

kg/m

c)

kg/m 2^2  

d)

m/s

58.

If the angle of incidence shown at right is 45° and

the angle of refraction is 30°, which substance

has the larger index of refraction?

a)

 The top substance because going from a larger n to a smaller n refraction is away from the normal.

b)

The bottom substance because because going from a smaller n to a larger n refraction is towards the normal.

c)

The top substance because going from a larger n to a smaller n refraction is towards the normal.

d)

The bottom substance because going from a larger n to a smaller n refraction toward the normal.

59.

Energy of motion is called

a)

kinetic energy

b)

potential energy

c)

thermal energy

d)

gravitational energy

60.

The correct formula for calculating the acceleration of an object is:

a)

a = d/t

b)

a = g(t)

c)

a = Δv\Delta v  / Δt\Delta t  

d)

a = (Δv)(Δt)\left(\Delta v\right)\left(\Delta t\right)  

61.

The total amount of energy in a system

a)

is constantly changing

b)

is constantly decreasing

c)

remains constant

d)

cannot be measured

62.

Total Mechanical Energy (TME) means

a)

potential energy only

b)

kinetic energy only

c)

nuclear energy only

d)

potential energy + kinetic energy

63.

A ball is dropped from a tall building and falls for 3 seconds. How fast is it moving?

a)

3 m/s

b)

10 m/s

c)

30 m/s

d)

impossible to determine with this information

64.

To calculate how far a ball falls in 3 seconds you must use:

a)

d = 1/2g t2t^2  

b)

d = Δvt\frac{\Delta v}{t}  

c)

d = (v)(t)

d)

d = (a)(t)

65.

Momentum is

a)

mass in motion

b)

time in motion

c)

speed x time

d)

60 s

66.

Objects in motion tend to remain in motion, objects at rest tend to remain at rest is one way of describing:

a)

mass

b)

velocity

c)

inertia

d)

energy

67.

When light reflects off a mirror:

a)

it slows down

b)

the angle of incidence is larger than the angle of reflection

c)

the light passes through to the new medium

d)

the angle of incidence is equal to the angle of reflection

68.

Which of the following is a primary color of light?

a)

magenta

b)

cyan

c)

yellow

d)

green

69.

Work is:

a)

(mass)(distance)

b)

(force)(mass)

c)

(distance)(time)

d)

(force)(distance)

70.

Which of the following is a scalar (not vector) quantity?

a)

time

b)

velocity

c)

displacement

d)

acceleration

71.

A real image is:

a)

Always inverted

b)

Always larger

c)

Never able to be projected on a screen

d)

Always upright

72.

An object free falls for 3.0 seconds. How far will it fall?

a)

30 m

b)

45 m

c)

9.0 m

d)

125 m

73.

An object in free fall:

a)

falls at a constant 10 m/s

b)

falls at 10 m/s until it reaches terminal velocity

c)

accelerates at 10 m/ s2s^2 until it reaches terminal velocity

d)

accelerates at 10 m/ s2s^2 until it strikes the ground

74.

In the absence of a net force, a moving object will

a)

continue moving with a constant velocity in a straight line.

b)

stop moving

c)

accelerate

d)

decelerate

75.

Plane mirrors can make:

a)

virtual images that are larger than the object

b)

both real and virtual images that are smaller than the object

c)

real images of the same size as the object

d)

virtual images of the same size as the object

76.

Which of the following is not a ray of light you can use to find an image for a lens.

a)

A ray of light that enters through the center of the lens passes through the lens unbent.

b)

A ray that enters through the focal point passes through the lens unbent.

c)

A ray that enters through the focal point refracts out parallel to the principal axis.

d)

A ray of light that enters parallel to the principal axis refracts out through the focal point.

77.

The lens shown causes light rays to:

a)

come together as they pass through.

b)

pass straight through unrefracted.

c)

bounce back at the same angle.

d)

spread apart as they pass through.

78.

The image formed in the diagram above is:

a)

Real and magnified

b)

Real and smaller

c)

Virtual and magnified

d)

Virtual and smaller

79.

A 2 cm tall light bulb is placed a distance of 4 cm from a

concave mirror having a focal length of 5 cm. Determine the

image distance.

a)

0.04 cm

b)

0.05 cm

c)

  • 20 cm

d)

-20 cm

80.

If the hi you calculate using the mirror/lens equation is negative, this means the image is:

a)

smaller than the object

b)

the same size as the object

c)

real

d)

virtual

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