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Physics - Semester 1 Final Exam

Total questions: 109

Worksheet time: 3hrs 48mins

Name
Class
Date
1.

What is the difference between science and technology?

a)

Science is a method of answering theoretical questions; technology is a method of solving practical problems

b)

These two words describe basically the same thing.

c)

Science is more fun

2.

How does the rate of progress differ today from the rate in previous centuries?

a)

Even not so long ago, great things could take more than a century to build

b)

Progress in our age is much quicker than it was thousands of years ago

c)

Some people working on spaceships today were born before jet airliners

d)

All of these answers

3.

Objects move only when force is exerted.

a)

True

b)

False

4.

Air resistance is caused by friction between the air and an object moving through the air.

a)

True

b)

False

5.

The speed of an object dropped in air will continue to increase without limit until it strikes the ground.

a)

True

b)

False

6.

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

a)

it quadruples

b)

it doubles

c)

it halves

d)

it quarters

7.

A girl whose weight is 200 N hangs from a bar supported by two strands of rope. What is the tension from each strand?

a)

400N

b)

300N

c)

200N

d)

100N

8.

A tennis ball and a solid steel ball the same size are dropped at the same time. IN the absence of air resistance, which ball has the greater acceleration?

a)

the tennis ball

b)

the steel ball

c)

nonsense! they both have the same acceleration

9.
As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy? 
a)
Both the potential energy and kinetic energy decrease
b)
The potential energy decreases while the kinetic energy increases 
c)
The kinetic energy decreases while the potential energy increases 
d)
Bothe the potential energy and kinetic energy increase 
10.
While a boulder is on the top of a hill it has what type of energy? 
a)
Mechanical
b)
Kinetic
c)
Potential 
d)
Reactive 
11.

speed =

a)

ending  time − starting  time2\frac{ending\ \ time\ -\ starting\ \ time}{2}

b)

distan⁡cetime\frac{dis\tan ce}{time}

c)

Δt\Delta t

d)

distance x time

12.

Free fall

a)

is falling without accelerating

b)

is an object moving under the influence of gravity only

c)

involves air resistance

d)

is falling at a constant speed

13.

An object is moving if

a)

it's on a bus

b)

its position relative to a fixed point is changing

c)

it's heavier than air

14.

Which one of these is not a law of motion?

a)

What goes up must go down.

b)

An object's velocity remains constant unless an outside force acts upon it.

c)

F=ma

d)

Every force has an equal and opposite force.

15.
The total momentum before a collision is _________ the total momentum after a collision.
a)
equal to 
b)
less than 
c)
more than
d)
It depends on the type of collision
16.

A real car moving at 10 km/h has more momentum than a toy car moving at the same rate because ______.

a)

its mass is greater

b)

its mass is less

c)

it moves faster

d)

of friction

17.

Newton's Second Law of Motion can be summarized by which equation?

a)

M = F/a

b)

F = ma

c)

F = m/a

18.

If each object is moving at the same velocity which will have the least momentum?

a)

Baseball

b)

Bowling Ball

c)

Golf Ball

d)

Tennis Ball

19.
Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...
a)
Skater 1 experiences a greater change in momentum
b)
Skater 2 experiences a greater change in momentum
c)
Skater 1 has a greater velocity than Skater 2
d)
Skater 1 experiences a greater force
20.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
21.

According to Newton's Laws, for every action there is an ....

a)

equal and opposite reaction.

b)

equal and parallel reaction.

c)

unequal and opposite reaction.

d)

unequal and unrelated reaction.

22.
If net force acting on object is 0, then the force is considered to be..
a)
Balanced
b)
Unbalanced
c)
Equal in Direction
d)
Distance/Time
23.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
24.
Which type of force(s) will cause a change in an object's motion?
a)
gravity
b)
zero net force
c)
balanced forces
d)
unbalanced forces
25.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion. 
d)
Friction 
26.
A person is pushed forward into their seat belt when a car stops.  Which law is this?
a)
1st
b)
 2nd
c)
2 and 3
d)
3rd 
27.

Pretend that you are in a car and not wearing a seatbelt. What might happen to you if the driver slammed on the brakes?

a)

You would move sideways

b)

You would move towards the front windshield

c)

You would stay in your seat

28.

Looking at the image. Decide if this is balanced or unbalanced.

a)

Unbalanced

b)

Balanced

29.

The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?

a)

mechanical to heat

b)

sound to mechanical

c)

potential to kinetic

d)

kinetic to potential

30.

How does the mass of a bowling ball that has been rolled down the lane affect the kinetic energy?

a)

The kinetic energy does not depend on the mass of the bowling ball.

b)

The kinetic energy is increasing proportional to the mass of the bowling ball.

c)

The kinetic energy is decreasing proportional to the mass of the bowling ball.

d)

The kinetic energy is increasing proportional to the square of the mass of the bowling ball.

31.

When gasoline is burned in a car engine, ________ energy is converted into _________ energy.

a)

heat, chemical

b)

chemical, potential

c)

mechanical, chemical

d)

chemical, mechanical

32.

Muscles convert chemical energy into

a)

light energy.

b)

nuclear energy.

c)

mechanical energy.

d)

electromagnetic energy.

33.

Energy cannot be created or destroyed. It can only be changed from one form to another. This is known as the law of conservation of ___________:

a)

mass

b)

energy

c)

temperature

34.

What energy conversion is taking place in this picture?

a)

solar energy to thermal energy

b)

thermal energy to chemical energy

c)

chemical energy to thermal and light energy

35.

What can you say about the potential energy of the two sleds shown above?

a)

Sled B has more potential energy.

b)

There is not enough information to know which sled has more potential energy.

c)

The two sleds have the same potential energy.

d)

Sled A has more potential energy.

36.

Why does a soccer ball eventually stop rolling once it’s kicked on a grassy field?

a)

none of these

b)

Gravity acts upon it.

c)

Light acts upon it.

d)

Friction acts upon it.

37.

What is a PUSH or PULL of an object?

a)

Motion

b)

Force

c)

Friction

d)

Gravity

38.

What pulls a ball back to earth?

a)

Gas

b)

Gravity

c)

Friction

d)

Molecules

39.

_______ is a force that acts between two objects which are touching. This force slows any movement between the two objects.

a)

pressure

b)

magnetism

c)

friction

40.

What surface would probably offer the least friction if you were to slide a box across it?

a)
b)
c)
d)
41.

1. It is easier to ride a bicycle down a hill than to ride up a hill because _______ helps the bicycle move down the hill.

a)

gravity

b)

friction

c)

rotation

42.

the tendency of an object to resist a change in its motion

a)

acceleration

b)

inertia

c)

mass

43.

Objects with greater _________ also have greater inertia.

a)

speed

b)

mass

c)

friction

44.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
45.

When are you undergoing an acceleration in a car?

a)

speed up

b)

slow down

c)

make turns

d)

All of the above

46.

Which law of motion does this picture illustrate?

a)

1st Law

b)

2nd Law

c)

3rd Law

47.
Average speed is calculated..............
a)
by dividing the total distance by the total time. 
b)
by dividing distance by time. 
c)
by multiplying mass and acceleration. 
48.
a)
This is an example of Newton's First Law.
b)
This is an example of Newton's Second Law.
c)
This is an example of Newton's Third Law.
49.
Constant Speed is................
a)
the speed of an object calculated by taking the total distance and how long it took that object to move that distance. 
b)
when an object moves at the same speed for an extended period of time. 
c)
the speed and direct an object is moving. 
50.
This is an example of..........
a)
Newton's First Law
b)
Newton's Second Law
c)
Newton's Third Law
51.
a)
This is an example of Newton's First Law.
b)
This is an example of Newton's Second Law.
c)
This is an example of Newton's Third Law.
52.

An astronaut floating alone in space throws a baseball. If the ball floats away at a speed of 20 m/s, the astronaut will

a)

move at a higher speed in the opposite direction

b)

move at a lower speed in the opposite direction

c)

move in the opposite direction at a speed of 20 m/s

53.

An object that has kinetic energy must be

a)

in an elevated position

b)

falling

c)

at rest

d)

moving

54.

A ball rolling down an incline has its maximum speed at

a)

the top

b)

the exact middle

c)

the bottom

d)

difficult to predict without knowing the slope of the incline

55.
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.
56.
In order to convert to Kelvin, you add ______ to the Celsius measurement.
a)
372
b)
273
c)
237
d)
732
57.
What is 50 C in Kelvin?
a)
223
b)
323
c)
100
d)
50
58.
100 degrees Celsius is equal to _______ Kelvin. 
a)
0 K
b)
273 K
c)
173 K
d)
373 K
59.
The following graph shows ____ relationship. 
a)
Direct
b)
Inverse
60.
Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm (make sure you use the correct R value).
a)
7.18 L 
b)
7.81 L
c)
4.63 L
d)
4.36 L
61.
A sample of oxygen gas has a volume of 150.0 mL when its pressure is .947 atm. What will the volume of the gas be if it is lowered to a pressure of 0.658 atm and the temperature remains constant?
a)
72 mL
b)
144 mL
c)
216 mL
d)
288 mL
62.
Determine the initial temperature of a random gas when the initial volume is 2.2 L and it is cooled to 88K with a volume of 0.85 L. 
a)
0.029 K
b)
0.021 K
c)
227.76 K
d)
34 K
63.

What happens when you increase the amplitude of a sound?

a)

it makes the sound louder

b)

it makes the sound travel faster

c)

it makes the sound softer

d)

it changes the pitch or note of the sound

64.

What can electromagnetic waves travel through (select all that apply)?

a)

solids

b)

empty space

c)

liquids

d)

gases

65.
What is 50 C in Kelvin?
a)
223
b)
323
c)
100
d)
50
66.
The volume of a gas at 25ο C is 3.8 L.  What will be the volume of that gas at 57 ο C if the pressure is held constant?
a)
8.66 L
b)
4.21 L
c)
6.34 L
d)
3.46 L
67.

Which measurement can be identified by the unit K (Kelvin)?

a)

Temperature

b)

Volume

c)

Pressure

d)

Mass

68.

Which measurement can be identified by the unit L (Liters)?

a)

Temperature

b)

Volume

c)

Pressure

d)

Mass

69.

If a ball thrown straight up into the air takes 4 seconds to reach the top (peak), how long will it take to travel from the peak back to the original position?

a)

0s

b)

1s

c)

3s

d)

4s

70.

A ball thrown straight up takes 8 total seconds to complete its journey all the way up and down. 1 second into its journey and 7 seconds into its journey the magnitude of its velocity will be ______________ and its direction _______________.

a)

opposite, the same

b)

the same, opposite

c)

the same, the same

d)

opposite, opposite

71.

The initial horizontal velocity of a projectile is ____ its final horizontal velocity.

a)

less than

b)

equal to

c)

greater than

72.

What is true about the vertical velocity of a projectile launched horizontally?

a)

It is initially at its maximum value.

b)

It increases due to gravity as it falls.

c)

It remains constant throughout its trajectory.

d)

It decreases as it falls due to gravity.

73.

If two projectiles are launched at two different heights, 2m and 10m, which one will reach the ground first?

a)

2m

b)

10m

c)

they both will hit the ground at the same time

74.

Which hits the ground first if they start at the same height: a dropped ball or a ball launched with a

horizontal velocity?

a)

the launched ball

b)

the dropped ball

c)

they both hit at the same time

75.

What is the velocity of an object launched straight up at its highest point?

a)

zero

b)

equal to its vx

c)

½ its maximum value

d)

equal to gravity

76.

The path followed by a projectile is also known as its

a)

trajectory

b)

range

c)

height

d)

vertical displacement

77.

Once a projectile is launched, what is the only force that affects its motion?

a)

mass

b)

friction

c)

inertia

d)

gravity

78.

Which of the following would NOT be considered a projectile?

a)

A cannonball fired towards a distant castle.

b)

A cannonball rolling down a slope.

c)

A cannonball fired straight outward from a castle wall.

d)

A cannonball after it rolls off the edge of a cliff.

79.
Use trig ratios (SOH CAH TOA) to solve for x 
a)
12.1
b)
7.2
c)
6.0
d)
8.9
80.
a)
A
b)
B
c)
C
d)
D
81.
Which Trig function do you use?
a)
Sine
b)
Cosine
c)
Tangent
82.
Which Trig function do you use?
a)
Sine
b)
Cosine
c)
Tangent
83.
Find the missing side
a)
9
b)
41
c)
6.4
d)
6.2
84.

Is displacement a vector or scalar quantity?

a)

Vector

b)

Scaler

85.

What's the sum of the vectors?

a)

50 N -->

b)

50 N <--

c)

350 N -->

d)

350 N <--

86.

What's the sum of the vectors

a)

13N -->

b)

13 N <--

c)

113 N -->

d)

113 N <--

87.

What is the x-component of the vector 24 N @ 30 degrees below the +x?

a)

+24*cos30

b)

-24*cos30

c)

+24*sin30

d)

-24*sin30

88.

What is the x-component of the vector 24 N @ 30 degrees below the +x?

a)

+24*cos30

b)

-24*cos30

c)

+24*sin30

d)

-24*sin30

89.

What is the magnitude of the vector whose x-component is -9m and y-component is -5m?

a)

7.5 m

b)

10.3 m

c)

27 m

d)

106 m

90.

(a)   is a measure of how close measurements come to each other when they are made in the same way.

91.
a)

Student A

b)

Student B

c)

Student C

d)

Cannot be determined

92.

How close a measurement is to the accepted value is called (a)   .

93.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
94.

This bullseye demonstrates...

a)

High Accuracy & High Precision

b)

High Accuracy & Low Precision

c)

Low Accuracy & High Precision

d)

Low Accuracy & Low Precision

95.

A student's measured length during a science experiment was 12.00 cm. The actual size was 14.25 cm.


What was the percent error?


*Hint: You now know how to calculate error, and you should know how to calculate a percent, so put the two together to find this answer.

a)

15.79%

b)

18.75%

c)

2.25%

96.

Jessie estimates the weight of her cat to be 8 pounds. The actual weight of the cat was 10 pounds.


What was the percent error?


*Hint: You now know how to calculate error, and you should know how to calculate a percent, so put the two together to find this answer.

a)

15%

b)

20%

c)

25%

d)

30%

97.

Which is the more precise measurement?

a)

4 mL

b)

4.3 mL

c)

4.30 mL

d)

4.300 mL

98.

Describe the accuracy and precision of the image

a)

Very accurate and somewhat precise

b)

Very accurate but not precise at all

c)

Not accurate at all but very precise

d)

not accurate and not very precise

99.

Based on the markings of this beaker, what is the estimated volume?

a)

48 mL

b)

48.2 mL

c)

48.25 mL

d)

0.04 L

100.

Based on the markings of this graduated cylinder, what is the estimated volume?

a)

63.5 mL

b)

63 mL

c)

63.55 mL

d)

0.063 L

101.

This image is a great example of...

a)

precision

b)

accuracy

102.

Which Student is the most Precise?

a)

Alex

b)

Shandra

c)

Luis

103.

A set of data are all close in value to each other, but they are not close to the actual value. This set of data can be described as _________________.

a)

precise

b)

accurate

104.

A set of data are all close to each other, and they are close to the actual value. This set of data can be described as...

a)

accurate

b)

precise

105.

Engineers must be able to clearly communicate their solution process and their proposed solution. When problem solving requires measurements and/or calculations, engineers must take care to ….

a)

use clear definitions

b)

state the meaning of variables

c)

be careful about specifying units

d)

calculate accurately

e)

express answers with a degree of precision appropriate for the problem context

106.

If the precision of your answer is specified, you should report your answer to that level of precision. However, if the required precision of the answer is not given (specified), what are the things to consider when deciding the number of digits to report (precision) when reporting a calculated value?

a)

Common sense

b)

The most precisely measured value used

c)

Accepted convention

d)

The targeted rule

e)

The least precisely measure value used

107.

Every measurement is only a(n) (a)   of the true value of the quantity.

108.

In this problem 2(9.8 in. +12.53 in.) =2\left(9.8\ in.\ +12.53\ in.\right)\ = the answer should be.

a)

44.0

b)

44.7

c)

44.6

d)

44.66

e)

45.00

109.

Reporting a calculated measurement, and you are reporting it to the appropriate precision, what is the number one thing to NOT forget?


*Hint: It's one word.

(a)  

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