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Physics Semester Review

Total questions: 93

Worksheet time: 1hrs 24mins

Name
Class
Date
1.

For an object to change velocity, it must have a(n) _________ acting on it.

a)

Force

b)

Area

c)

Effort

d)

Scalar

2.

A boat moving away from you as you jump out of it demonstrates which of Newton's Laws?

a)

Newton's First Law

b)

Newtons's Second Law

c)

Newton's Third Law

d)

Newton's Law of Gravity

3.

There are two cars involved in a head-on collision. One car has twice the mass of the other. The car with more mass hits the car with smaller mass with __________ force.

a)

No

b)

Less

c)

Equal

d)

More

4.

An elevator with a mass of 1500 kg accelerates upward at 1.63 m/s2. What is the force acting on the elevator’s support cable?

a)

495 N

b)

222 N

c)

2444 N

d)

1100 N

5.

What force is required to accelerate a 60 kg cart at 2.0 m/s2 forward?

a)

120.0 N

b)

12.0 N

c)

1200.0 N

d)

There isn't enough information to tell

6.

What is the name of the missing force in this free body diagram?

a)

Tension Force

b)

Normal Force

c)

Weight Force

d)

Frictional Force

7.

If these boys are pulling with the same amount of force. What will happen?

a)

The boy on the left will win

b)

The boy on the right will win

c)

Neither will move

d)

Both will fall down

8.

Which graph presents an object moving with a constant positive velocity?

a)
b)
c)
d)
9.

A tennis ball is thrown straight up with an initial velocity of 20.0 m/s. It is caught at the same distance above the ground that it was thrown from. How long is the ball in the air?

a)

4.1 s

b)

2.04 s

c)

5.0 s

d)

1.5 s

10.

Describe the curve located on the graph between 0 seconds and 2 seconds.

a)

It shows constant velocity

b)

It shows constant acceleration

c)

It show the object standing still

d)

It shows constant displacement

11.

Describe the curve located on the graph between 2 seconds and 7 seconds.

a)

It shows constant velocity

b)

It shows constant accleration

c)

It shows the object standing still

d)

It shows constant displacement

12.

Choose the correct definition:


Force

a)

A push or pull exerted on an object

b)

object or objects of interest that can interact with each other and the external world

c)

the vector sum of all the forces on an object

d)

The tendency of an object to resist changes in velocity

13.

Choose the correct definition:


Inertia

a)

The tendency of an object to resist changes in velocity

b)

The support force acting on an object

c)

the specific name for the force exerted by a rope or a string

d)

the perpendicular contact force exerted by a surface on another object

14.

Choose the correct definition:


Drag Force

a)

the gravitational force exerted on an object

b)

the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity

c)

the force exerted by a fluid on the object moving through the fluid; it depends on the object's motion and properties, and the fluid's properties

d)

a physical model that represents the forces acting on a system

15.

Choose the correct definition:


Newton's First Law

a)

States that an object at rest will remain at rest, and a moving object will continue moving in a straight line with constant speed, if and only if the net force acting on that object is zero.

b)

states that the acceleration of an object is proportional to the net force and inversely proportional to the mass of the object being accelerated

c)

states that all forces come in pairs and that the two forces in a pair act on different objects and are equal in strength and opposite in direction

d)

an object's apparent weight of zero that results when there are no contact forces pushing up on the object

16.

Choose the correct definition:


Newton's Second Law

a)

States that an object at rest will remain at rest, and a moving object will continue moving in a straight line with constant speed, if and only if the net force acting on that object is zero.

b)

states that the acceleration of an object is proportional to the net force and inversely proportional to the mass of the object being accelerated

c)

states that all forces come in pairs and that the two forces in a pair act on different objects and are equal in strength and opposite in direction

d)

an object's apparent weight of zero that results when there are no contact forces pushing up on the object

17.

Choose the correct definition:


Newton's Third Law

a)

States that an object at rest will remain at rest, and a moving object will continue moving in a straight line with constant speed, if and only if the net force acting on that object is zero.

b)

states that the acceleration of an object is proportional to the net force and inversely proportional to the mass of the object being accelerated

c)

states that all forces come in pairs and that the two forces in a pair act on different objects and are equal in strength and opposite in direction

d)

an object's apparent weight of zero that results when there are no contact forces pushing up on the object

18.
What states that "every object in the universe attracts every other object"?
a)
Law of Universal Gravitation
b)
Newton's First Law of Motion
c)
My mother
d)
Inertia & gravity
19.
Force of gravity is directly proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
20.
Force of gravity is inversely proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
21.
If Earth's mass was cut in half, what would happen to your mass?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, mass is not affected by gravitational force
22.
What happens to the acceleration due to gravity as you move away from the surface of a planet?
a)
Increases
b)
Decreases
c)
Remains the same
d)
Cannot be determined
23.
As distance between two objects increases, the pull of gravity ___.
a)
Increases
b)
Decreases
c)
Stays the same
24.
Why would you weigh less on the moon?
a)
less air
b)
less sunlight
c)
there is no water on the moon
d)
less gravitational pull
25.
What variable do "Newtons" represent?
a)
Electrostatic Charge
b)
Force
c)
Distance
d)
Mass
26.

What is the unit for the velocity?

a)

meters

b)

m/s

c)

Hertz

d)

seconds

27.

What is the unit for the gravitational force?

a)

newtons

b)

m/s

c)

Hertz

d)

seconds

28.

Which of the following is considered good laboratory practice?

a)

Wearing open-toed shoes

b)

Eating while you work

c)

Working alone with electrical equipment

d)

None of these

29.

Which of the following is something that you should always do while working with electricity?

a)

Rewire the circuit before each experiment

b)

Make sure that your batteries are different

c)

use equipment that has frayed power cords

d)

Make sure that both the area and your hands are completely dry at all times

30.

Which of the following is the base SI unit for mass?

a)

grams

b)

milligrams

c)

kilograms

d)

pounds

31.

Which of the following is the correct prefix for 1000000?

a)

Centi-

b)

Micro-

c)

Mega-

d)

Kilo-

32.

A motion diagram is a diagram that does which of the following?

a)

Adds together average speeds of all objects in the diagram

b)

Uses drawings to depict the vectors of the velocities involved in the diagram

c)

Uses a series of dots to represent the motions of an object

d)

Takes a series of photographs at equal time intervals and overlays them to see how the position changes over time

33.

A vector must always have both

a)

Distance and velocity

b)

magnitude and direction

c)

direction and acceleration

d)

magnitude and time

34.

The graph show the velocity of a car that is moving in a straight line. During which of the following intervals are the forces on the car balanced?

a)

q to r

b)

r to s

c)

s to t

d)

t to u

35.

A 45 kg child on a skateboard experiences a 75 N force as shown in the image. What is the acceleration of the child?

a)

1.6 m/s2

b)

2.0 m/s2

c)

0.6 m/s2

d)

25.0 m/s2

36.

An upward force of 150 N is applied to a box weighing 70 N. Which of the following is the free-body diagram for this situation?

a)

A

b)

B

c)

C

d)

D

37.

You throw a ball upward with an initial velocity of 20 m/s. 4 seconds later, you catch it at the same height that it was thrown. How fast is the ball moving at the top of its upward path?

a)

0 m/s

b)

5 m/s

c)

1 m/s

d)

20 m/s

38.

What is another name for Newton's First Law of motion?

a)

The law of momentum

b)

The law of inertia

c)

The law of acceleration

d)

The law of gravity

39.

Net force is defined as:

a)

The total effort present on an object

b)

The vector sum of all forces on an object

c)

The composite of all forces acting on an object

d)

The total sum of all resistance acting on an object

40.

Which of the following is Newton's Second Law?

a)

a force is needed to keep an object moving

b)

the acceleration of an object is proportional to the net force exerted on the object and inversely proportional to the mass of the object.

c)

objects remain either at rest or continue moving in a straight line with constant speed only if the net force on that object is zero.

d)

all forces come in pairs.

41.

A scale on Earth shows that you weight 885N. What is your mass?

a)

90 kg

b)

110 kg

c)

8673 kg

d)

75 kg

42.

Average acceleration is defined as

a)

The change in an object's velocity during a measurable time interval divided by that specific time interval

b)

The center-seeking acceleration of an object moving in a circle at a constant speed

c)

A push or a pull exerted on an object

d)

The attractive force between two objects that is directly proportional to the mass of the objects

43.

An elevator with a mass of 2000 kg accelerates upward at 1.63 m/s2. What is the force acting on the elevator’s support cable?

a)

3260 N

b)

326.0 N

c)

1100 N

d)

1226 N

44.

You throw a tennis ball straight up with an initial velocity of 22.5 m/s. It is caught at the same distance above the ground. Neglecting air resistance, what is the tennis ball’s velocity when it returns your hand?

a)

22.5 m/s

b)

19.4 m/s

c)

9.8 m/s

d)

25.6 m/s

45.
Centripetal acceleration always points
a)
in the direction of the object's motion
b)
in the opposite direction of the object's motion
c)
towards the center of the circle
d)
towards the outside of the circle
46.
Bruno the bat flies at a speed of 0.5 m/s in circle of radius 1 m. What is his acceleration?
a)
0.25 ms-2
b)
0.5 ms-2
c)
1 ms-2
d)
2 ms-2
47.
What is the direction of the velocity at point B, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
48.
The velocity is always _____ to the line of a circle. 
a)
outwards
b)
towards the center
c)
tangent
d)
faster
49.
You swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?
a)
Friction
b)
Centripetal Force
c)
Gravity
d)
Inertia
50.
If the radius of the string is .3 meters long and the stopper makes 5 revolutions per second, what is the speed of the stopper? (Hint: C=2πr)
a)
9.4 m/s
b)
6.8 m/s
c)
11.7 m/s
d)
3.5 m/s
51.
Centrifugal force is a ______
a)
force that pushes you to the outside of a circle during uniform circular motion.
b)
fictitious force that is really just the linear momentum of an object in uniform circular motion.  
c)
The force that keeps the planets in orbit
52.

What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?

a)

5 m/s2

b)

17.63 m/s2

c)

10 m/s2

d)

8.81 m/s2

53.
Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.
a)
2.4 m/s
b)
3.6 m/s
c)
3.9 m/s
d)
4.2 m/s
54.

A bicycle has a period of 0.3s . What is the

speed of its tires if their radius is 30 cm?

a)

6 m/s

b)

3 m/s

c)

60 m/s

d)

30 m/s

55.

The drum of a washing machine rotates 1800 times in 3 minutes. What is the period?

a)

0.1 s

b)

0.2 s

c)

0.3 s

d)

0.5 s

56.

A toy car is following a circular path with a constant speed of v=3 m/s . If the radius of the circular path is 1 m, find The centripetal acceleration of the car

a)

30 m/s2

b)

3 m/s2

c)

9 m/s2

d)

6 m/s2

57.
Centripetal acceleration is ...
a)
Acceleration toward the center of a curved or circular path
b)
Acceleration toward the outside of a circle
c)
Vertical motion instead of horizontal motion
58.
Which of the following is the unit for centripetal force?
a)
J
b)
m/s2
c)
kg⋅m/s
d)
N
59.

A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?

a)
b)
c)
d)
60.
Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.
a)
2.4 m/s
b)
3.6 m/s
c)
3.9 m/s
d)
4.2 m/s
61.
The time taken for one complete circuit is called the... 
a)
Period
b)
Frequency 
c)
Angular velocity
62.
Planets orbit the Sun in a shape called a(n)
a)
circle
b)
ellipse
c)
focus
d)
perihelion
63.
An ellipse is drawn around two points called
a)
aphelion
b)
perihelion
c)
foci
d)
axis
64.
When a planet orbits the Sun, one of the foci of the elliptical orbit is 
a)
the axis
b)
the perihelion
c)
the center
d)
the Sun
65.
The place where a planet is closest to the Sun as it orbits the Sun is called the
a)
perihelion
b)
aphelion
66.
The place where a planet is farthest away from the Sun in its orbit around the Sun is called the
a)
aphelion
b)
perihelion
67.
Where is the planet moving faster
a)
Position A to B
b)
Position B to C
c)
Position H to I
d)
Position I to J
68.
What is true about the area between points A, B and the Sun, and the area between points H, I and the Sun?
a)
The area between A, B and the Sun is the largest.
b)
The area between H, I and the Sun is the largest
c)
Both areas are equal in size
d)
There is not enough information to determine the areas
69.
Kepler's 2nd Law deals with 
a)
the shape of the planets' orbits
b)
the speed/area the planet travels 
c)
the length of time it takes the planet to orbit the sun
70.
A planet moves __________ when it is farthest from the sun.
a)
faster
b)
slower
71.
Kepler's first law states that the orbits of the planets are oval in shape or 
a)
ellipses
b)
perfect circles
72.
The farther away a planet is from the sun, the _______ it takes it to orbit the sun once. 
a)
longer
b)
shorter
73.
The path a planet travels around the sun is called its 
a)
orbit
b)
ellipse
c)
barycenter
d)
precession
74.
The law of universal gravitation is credited to whom?
a)
Einstein
b)
Galileo
c)
Darwin
d)
Newton
75.
Two factors effecting the magnitude of the force of gravity between 2 objects are...
a)
mass and distance 
b)
mass and matter
c)
distance and weight 
d)
weight and mass
76.

If Earth's mass was cut in half, what would happen to your mass?

a)

Increase because gravitational force increases

b)

decrease because gravitational force decreases

c)

decrease because gravitational force increases

d)

nothing, your mass is not affected by Earth's mass

77.
What states that "every object in the universe attracts every other object"?
a)
Law of Universal Gravitation
b)
Newton's First Law of Motion
c)
My mother
d)
Inertia & gravity
78.
Force of gravity is directly proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
79.

Two masses m1 and m2 are separated by a distance R and gravitaional force between them is F. If m1 is doubled and m2 is halved the new Force will be

a)

2F

b)

F

c)

F/2

d)

4F

e)

F/4

80.

What is the gravitational force between two identical 50,000 kg asteroids whose centers of mass are separated by 1000 m?

a)

2500 N

b)

3.3 x 10-12 N

c)

1.67 x 10-4 N

d)

1.67 x 10-7 N

81.
Complete the following statement: The farther away two planets are the _______ the gravitational force between them.
a)
more
b)
same
c)
dosen't matter
d)
less
82.

Einstein's theory of gravity states that gravity is the warping of which of the following?

a)

Space

b)

Time

c)

Space and time

d)

Space-time

83.

Gravity can warp light, causing us to see objects in different locations, or as distorted images of themselves.

a)

True

b)

False

84.

The force of static friction between a box sliding on a surface depends on the ____ .

a)

Surface area of the box

b)

Speed of the box

c)

Normal force

d)

Force causing the motion

85.

A motion diagram is a diagram that does which of the following?

a)

Adds together average speeds of all objects in the diagram

b)

Uses a series of dots to represent the motions of an object

c)

Uses drawings to depict the vectors of the velocities involved in the diagram

d)

Takes a series of photographs at equal time intervals and overlays them to see how the position changes over time

86.

A scale on Earth shows that you weight 885N. What is your mass?

a)

90 kg

b)

110 kg

c)

8673 kg

d)

75 kg

87.

To conserve angular momentum, if the axis of rotation and moment of inertia of a spinning object decreases, the ________ of that object increases

a)

Angular Velocity

b)

Force

c)

Net Torque

d)

Impulse

88.

According to Newton’s ____ law, an object with no net force acting on it remains at rest or in motion with a constant velocity.

a)

First

b)

Second

c)

Third

d)

None of the above

89.

Basket ball A is dropped from a height of 10 meters. At the exact same time, basketball B is pushed off of a ledge sideways with a horizontal velocity of 1 m/s, also from a height of 10 meters. Which basketball will hit the ground first?

a)

Basketball A

b)

Basketball B

c)

They hit at the same time

d)

There is not enough information to determine which hits first

90.

A person is standing on roller blades and is holding a heavy medicine ball. If he throws the ball horizontally to the right, his resulting motion will be ________________________.

a)

Forward

b)

Backward

c)

Right

d)

Left

91.

Suppose you are an astronaut spacewalking outside your spacecraft to repair a broken part. In fixing the part, you have drifted several meters from your spacecraft. You are now at rest and are still holding a bag filled with tools. Using Newton's Laws, how could you return to your ship?

a)

Throw the tool bag in the opposite direction that you want to go

b)

Throw the tool bag in the same direction that you want to go

c)

Spin the tool bag around you in a circle

d)

None of the above

92.

If the radius of the string is .3 meters long and the stopper makes 5 revolutions per second, what is the speed of the stopper?

a)

9.4 m/s

b)

12.2 m/s

c)

8.1 m/s

d)

14 m/s

93.

What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?

a)

17.63 m/s2

b)

15.22 m/s2

c)

22.01 m/s2

d)

14.34 m/s2

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