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Unit 8 Test REVIEW

Total questions: 100

Worksheet time: 2hrs 40mins

Name
Class
Date
1.
Energy is
a)
the ability to do work or cause change.
b)
a push or a pull.
c)
the transfer of matter.
2.
What has MORE of an effect on the kinetic energy of an object?
a)
changing the mass of the object
b)
changing the velocity of the object
c)
changing the equation of kinetic energy
d)
changing the position of the object
3.
Calculate the KINETIC ENERGY of a 20 kg object that is moving at a speed of 12 m/s.
a)
1440 J
b)
1440 N
c)
120 J
d)
120 N
e)
240 J
4.
Calculate the GRAVITATIONAL POTENTIAL ENERGY of a rock that is sitting 32 m above ground and weighs 15 kg.
a)
4704 J
b)
4704 N
c)
480 J
d)
480 N
e)
7680 J
5.
A 200 kg roller coaster is released from rest from rest at Point A. Calculate the MECHANICAL ENERGY at point A on the roller coaster. Assume no friction will slow down the roller coaster.
a)

54880 J

b)
5600 J
c)
228 J
d)
2800 J
6.
The strength of friction depends on what two things?
a)
types of surfaces and how hard they push together
b)
length of surfaces and how hard they push together
c)
types of surfaces and the area in which they are in contact
7.
What two things affect gravity?
a)
Mass and Distance
b)
Mass and Size
c)
Speed and Mass
d)
Location and Length
8.
The greater an objects surface area,
a)
the faster it will accelerate downwards.
b)
the slower it will accelerate downwards.
c)
this has no effect on the objects free fall acceleration.
9.
Which law does this picture most accurately represent?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
10.
Which law does this picture most accurately represent?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
11.
What Net Force is necessary to give a 2.0 kg mass initially at rest an acceleration of 5.0 m/s2?
a)
10 N
b)
0.4 N
c)
0.4 J
d)
2.5 N
e)
2.5 J
12.
Which law does this scenario most accurately represent? A soccer ball accelerates more than a bowling ball when thrown with the same force.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
13.
Which Law is this picture showing
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
14.
The Law of Inertia applies to
a)
moving objects
b)
objects that are not moving
c)
both moving and non-moving objects
15.
Newton's 3rd Law states
a)
for every action there is an equal and opposite reaction
b)
a body will remain at rest unless acted upon by an unbalanced force
c)
a body will move with uniform motion in a straight line, unless acted upon an unbalanced force
d)
the force acting on a body equals the rate of change of momentum
16.
A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball.
a)
55 kg x m/s
b)
250 kg x m/s
c)
100 kg x m/s
d)
500 kg x m/s
17.
Which would have more momentum between a train moving at 0 kph and a bug flying at 0.5 kph?
a)
Bug
b)
Train
c)
They are the same
18.
What is Law of conservation of Momentum?
a)
It is a measure of motion defined as a mass (kg) times velocity (m/s) of an object.
b)
It is collisions in which both momentum and kinetic energy are conserved.
c)
It states that if an object collides, the total momentum before collision must be equal to the total momentum after the collision.
d)
It is an energy conversion where heat is produced by the friction between the objects involved in the collision.
e)
It is a form of conversion where one or more of the objects involved in the collision are permanently altered from their original shape, especially if those objects become stuck together.
19.
Alex applies 350 N of force to move his stalled car 40 m, how much work did Alex do?
a)
14000 J
b)
14000 N
c)
8.75 J
d)
8.75 N
e)
0.11 J
20.
A set of pulleys lifts an 800 N crate 4 meters in 7 seconds. How much power was used?
a)
547.1 w
b)
22,400 N x m x s
c)
22,400 J
d)
22,400 w
e)

457.1 W

21.
What is the missing force?
a)
Tension Force
b)
Normal Force
c)
Applied Force
d)
Friction Force
22.
What is the Net Force of this diagram?
a)
17 N, right
b)
23 N, right
c)
17 N, left
d)
12 N, up
23.
Which of the following is true about this free-body diagram?
a)
The forces are balanced
b)
The object is moving upward
c)
The object is free-falling
d)
The forces are unbalanced
24.
A car has run out of gas and is slowing down and will eventually stop. Which diagram best represents the forces on the car?
a)
Option 1
b)
Option 2
c)
Option 3
d)
Option 4
25.
Identical twins run up a flight of stairs. Jake takes 20 seconds, and Jordan takes 1/4 of a minute (15 seconds). Who did more WORK?
a)
Equal work
b)
Jordan
c)
Jake
26.
Identical twins run up a flight of stairs. Jake takes 20 seconds, and Jordan takes 1/4 of a minute (15 seconds). Who had more POWER?
a)
Equal power
b)
Jordan
c)
Jake
27.

What is the correct unit for MASS?

a)

m

b)

kg

c)

m/s

d)

N

28.

What is the correct unit for DISTANCE?

a)

m

b)

kg

c)

m/s

d)

N

29.

What is the correct unit for SPEED?

a)

m

b)

kg

c)

m/s

d)

N

30.

What is the correct unit for ENERGY?

a)

W

b)

J

c)

m/s

d)

N

31.

What is the correct unit for WORK?

a)

W

b)

J

c)

m/s

d)

N

32.

What is the correct unit for POWER?

a)

W

b)

J

c)

m/s

d)

N

33.

What is the correct unit for FORCE?

a)

m

b)

kg

c)

m/s

d)

N

34.

What is the correct unit for ACCELERATION?

a)

m/s^2

b)

kg

c)

m/s

d)

N

35.

Which correctly identifies the definition of STATIC Friction?

a)

Friction that acts on objects that are not moving.

b)

Friction that occurs when 2 solid surfaces slide over each other

c)

Friction that occurs when an object rolls across a surface

d)

Friction that occurs when a solid object moves through a liquid or gas

36.

Which correctly identifies the definition of SLIDING Friction?

a)

Friction that acts on objects that are not moving.

b)

Friction that occurs when 2 solid surfaces slide over each other

c)

Friction that occurs when an object rolls across a surface

d)

Friction that occurs when a solid object moves through a liquid or gas

37.

Which correctly identifies the definition of ROLLING Friction?

a)

Friction that acts on objects that are not moving.

b)

Friction that occurs when 2 solid surfaces slide over each other

c)

Friction that occurs when an object rolls across a surface

d)

Friction that occurs when a solid object moves through a liquid or gas

38.

Which correctly identifies the definition of FLUID Friction?

a)

Friction that acts on objects that are not moving.

b)

Friction that occurs when 2 solid surfaces slide over each other

c)

Friction that occurs when an object rolls across a surface

d)

Friction that occurs when a solid object moves through a liquid or gas

39.

Which correctly identifies the definition of KINETIC ENERGY?

a)

The energy an object has due to its motion.

b)

Stored energy that results from the position (height) or shape of an object

c)

The sum of all energy on an object.

d)

Stored energy that is stretched or compressed

40.

Which correctly identifies the definition of POTENTIAL ENERGY?

a)

The energy an object has due to its motion.

b)

Stored energy that results from the position (height) or shape of an object

c)

The sum of all energy on an object.

d)

Stored energy that is stretched or compressed

41.

Which correctly identifies the definition of MECHANICAL ENERGY?

a)

The energy an object has due to its motion.

b)

Stored energy that results from the position (height) or shape of an object

c)

The sum of all energy on an object.

d)

Stored energy that is stretched or compressed

42.

Which correctly identifies the definition of ELASTIC POTENTIAL ENERGY?

a)

The energy an object has due to its motion.

b)

Stored energy that results from the position (height) or shape of an object

c)

The sum of all energy on an object.

d)

Stored energy that is stretched or compressed

43.

energy of motion

a)

kinetic energy

b)

potential energy

c)

movement

d)

work

44.

energy cannot be created or destroyed, only transferred

a)

Law of conservation of matter

b)

Law of conservation of energy

c)

Law of energy transfer

d)

Law of the universe

45.

The equation PE = mass x gravity x height is used to find which type of energy?

a)

Kinetic Energy

b)

Potential Energy

46.

The equation KE = 1⁄2 mass x velocity2 is used to find which type of energy?

a)

Kinetic Energy

b)

Potential Energy

47.

The coaster at B is at -

a)

Maximum PE, Minimum KE

b)

Minimum PE, Minimum KE

c)

Minimum PE, Maximum KE

d)

Maximum PE, Maximum KE

48.
A stretched rubber band.
a)
Potential
b)
Kinetic
49.

Kinetic energy depends on the ________ and ________ of the object.

a)

Height (position)

b)

Mass

c)

Speed

d)

Friction

50.

At which point of the roller coaster is potential energy the greatest?

a)

W

b)

X

c)

Y

d)

Z

51.

What two factors affect an object's kinetic energy?

a)

area and volume

b)

mass and weight

c)

weight and height

d)

mass and speed

52.

Kinetic energy is measured in

a)

Newtons (N)

b)

Joules (J)

c)

Kilograms (kg)

d)

miles per hour (mph)

53.

Mass and speed both affect the amount of kinetic energy an object has, but ____________ has a greater effect.

a)

mass

b)

speed

c)

volume

d)

weight

54.
How much KE does a moving 6 kilogram object have if it moves with a velocity of 3 m/s?
a)
27 J
b)
18 J
c)
9 J
d)
2 J
55.
Gravitational potential energy depends on the ________ and ________ of the object. 
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction 
56.

What is the PE at the top of the ramp?

a)

0

b)

40 J

c)

80 J

d)

none of the above

57.
What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s.
a)
80 J
b)
3.2 J
c)
160 J
d)
40 J
58.

What is the value of the Earth's acceleration due to gravity (g)?

a)

9.8 m/s2

b)

100 m/s2

c)

25 m/s2

d)

3.14 m/s2

59.

Which of the following is the correct equation for calculating an object's gravitational potential energy?

a)

PE = mgh

b)

PE = mg / h

c)

PE = mg + h

d)

PE = gh

60.

Which is the correct unit for expressing gravitational potential energy?

a)

Joule

b)

Newton

c)

m/s2

d)

meter

61.

One of the tallest radio towers is in Fargo, North Dakota. The tower is 629 m tall. If a bird lands on top of the tower with a mass of 0.3kg. What is the birds GPE?

a)

1849.26 J

b)

184926 J

c)

1849.26 N

d)

188.7 J

62.

1. An owl has a mass of 4.00 kg. It dives to catch a mouse from a height of 20m How much GPE does the owl gain?


a)

784 J

b)

784 N

c)

40 J

d)

40 N

63.
Which of the following is a true statement about work?
a)
It measures how quickly an object accelerates 
b)
It measures how much effort is applied over a certain distance
c)
It measures the change in an object's rate of speed
d)
It measures how much time it takes to move a massive object
64.
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 
65.
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
66.

Calculate the PE of a 10 kg bicycle while parked at the top of a cliff that is 30 m high.

a)

2490 J

b)

2,940 J

c)

300 J

d)

3, 000 J

67.
What is the standard unit force is measured in?
a)
Newtons
b)
pounds
c)
grams
d)
meters
68.
How do we calculate work?
a)
W = F * d
b)
w = f * D
c)
W = F * D
d)
w = f * d
69.
How much work is being done with 200 N of force over 426 meters?
a)
85,200 J
b)
45,620 J
c)
90,480 J
d)
62,329 J
70.
The SI unit of work is?
a)
Joules
b)
Watts
c)
Newtons
d)
meters
71.
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
72.

A worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object?

a)

18 m

b)

4 m

c)

10 m

d)

6 m

73.
Two factors that determine work are
a)
size of the force, and distance
b)
size of the force, and type of force
c)
mass, and distance
74.
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
75.
You move an 8-newton weight five meters in 4 seconds. How much power have you generated?
a)
160 watts
b)
10 watts
c)
6.4 watts
d)
17 watts
76.
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
77.

What do the arrows or vectors represent?

a)

Forces acting on the object

b)

All the acceleration acting on the object

c)

All the ways an object can move

78.

Name the missing force.

a)

Weight force

b)

Normal force

c)

Frictional force

d)

Tension force

79.

Name the missing force...

a)

Frictional force

b)

Weight force

c)

Thrust

d)

Buoyant force

80.

Whenever an object is in motion, there is always a force opposing the motion:

a)

inertia

b)

momentum

c)

friction

d)

applied force

81.

The force that prevents objects from sinking into surfaces is known as:

a)

normal

b)

abnormal

c)

static

d)

inertia

82.

What is the net force of this diagram?

a)

17 N, right

b)

17 N, left

c)

23 N, right

d)

12 N, up

83.

This object could be moving in which directions? (pick all that are correct):

a)

Up

b)

Down

c)

Left

d)

Right

84.

The down-arrow in this diagram most likely represents:

a)

gravity

b)

normal

c)

a push or pull

d)

friction

85.

When two forces act in the same direction, how would you calculate the net force?

a)

Subtract the forces

b)

Balance the forces

c)

Add the forces

d)

Divide the forces

86.

How do you calculate the net force when forces are going in the opposite direction?

a)

Add the forces

b)

Divide the forces

c)

Find a fraction of the forces

d)

Subtract the forces

87.

What do the arrows represent in a free body diagram? (Select two)

a)

Object

b)

Direction

c)

Size

d)

Mass

88.

This is defined as forces that are equal in magnitude.

a)

Unbalanced Forces

b)

Forces

c)

Balanced Forces

d)

Net force

89.

A rightward force is applied to a dresser to accelerate it to the right across the bedroom floor.

a)
b)
c)
d)
90.

If this object were moving to the right, the left-arrow in this diagram would most likely represent:

a)

gravity

b)

normal

c)

a push or pull

d)

friction

91.

Which diagram best shows person pushing a couch (accelerating) across the floor?

a)
b)
c)
d)
92.

What is the unit of Power?

a)

Watt

b)

Newton

c)

Joule

d)

m/s2

93.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
94.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
d)
less friction doesn't affect speed
95.

A force that opposes motion between any surfaces that are in contact.

a)

gravity

b)

acceleration

c)

friction

d)

direction

96.
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
97.
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
98.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
99.
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
100.
Collisions can be ____________or ___________.
a)
fast or slow
b)
far or near
c)
elastic or inelastic
d)
none of the above

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