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G8 Q2 FINAL EXAM REVISION

Total questions: 189

Worksheet time: 4hrs 11mins

Name
Class
Date
1.

Displacement is the difference between your

a)

reference point and reference direction

b)

total distance traveled

c)

starting position and your final position

d)

average speed

2.

An object's location or _______________ is the distance from a reference point.

a)

distance

b)

position

c)

acceleration

d)

displacement

3.

Which line on the graph represents the fastest constant speed?

a)

A

b)

B

c)

C

d)

They are all moving at the same speed.

4.
A place or object used for comparison to determine if another object is in motion is called a
a)
comparison point
b)
reference point
c)
point of view
d)
motion detector
5.
An object is _____ if its position changes relative to another object.
a)
in motion
b)
at reset
c)
a frame of refence
d)
magical
6.
How far an object has moved?
a)
displacement
b)
distance
c)
motion
d)
reference point
7.

How do we find time?

a)

distance x speed

b)

speed - distance

c)

distance ÷ speed

d)

speed + distance

8.

A toy car moved along a 1.2 km track in 0.1 hour. Find the speed of the toy car.

a)

0.2 km/h

b)

1.2 m/min

c)

12 km/h

d)

200 m/h

9.

The location of a place or an object is called...

a)

position

b)

motion

c)

speed

d)

reference point

10.

What is a reference point?

a)

A place or object that is staying still, that is used to determine if something else is moving.

b)

A place or spot where something is located

c)

The action of moving or being moved

d)

Shortest distance between starting position and ending position

11.

To determine if an object has changed position, you need to know its position relative to another object. _______________

a)

True

b)

False

12.

Velocity is speed with direction

a)

True

b)

False

13.

20 km/hr is an example of

a)

direction

b)

velocity

c)

speed

d)

distance

14.

300 km/hr North is an example of

a)

Velocity

b)

Speed

c)

Direction

d)

Reference point

15.

You should NOT use a moving object as a reference point

a)

True

b)

False

16.

If you leave home and travel a million miles around the world and stop back home, what is your displacement?

a)

One million miles

b)

0

c)

two million miles

d)

none of the above

17.

You can find speed by

a)

Distance / Time

b)

Time/ Distance

c)

Time/Time

18.

7) If you ride your bike around the block, returning to the exact point where you started, your displacement is (a)   m?

19.
How fast or slow an object is moving.
a)
Direction
b)
Position
c)
Distance
d)
Speed
20.

Units of Distance

a)

Litres

b)

Meters

c)

Kilogram

d)

Kilometers

21.

Units of Speed

a)

Kilogram

b)

meter/second

c)

Meter

d)

Kilometer / Hour

22.

Motion can be described through a change in _____.

a)

temperature

b)

distance

c)

position

d)

speed

23.
Find the average speed of a train that traveled 540 km in 6 hours?
a)
80 km/h
b)
100 km/h
c)
90 km/h
d)
3240 km/h
24.

Match the description to the graph:

"The car is traveling at a constant speed."

a)
b)
c)
d)
25.
Which runner was faster?
a)
Runner A
b)
Runner B
26.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
27.

Distance divided by time

a)

average speed

b)

constant speed

c)

instantaneous speed

28.

Rate of change of position in which the same distance is traveled each second

a)

constant speed

b)

instantaneous speed

c)

average speed

29.

the starting point you choose to describe the location, or position, of an object

a)

reference point

b)

motion

c)

displacement

d)

position

30.

This car moves at a (an) ............... speed.

a)

constant

b)

changing

31.

When the body covers equal distances at unequal intervals of time, this means that the body moves at .................

a)

changing speed

b)

increasing acceleration

c)

constant speed

d)

decreasing acceleration

32.

A moving bus covers a distance of 500 m in 25 sec., so its speed equals ...............

a)

200 m/sec

b)

20 m/sec.2

c)

20 m/sec.

d)

20 m

33.

What two measurements (factors) are needed to calculate average speed?

a)

Distance and Time

b)

Volume and Mass

c)

Mass and Time

d)

Speed and Distance

34.
The distance an object moves per unit of time, such as miles per hour
a)
Speed
b)
Velocity
c)
Acceleration
d)
All of These
35.
The straight-line distance between the starting and ending points.
a)
Displacement
b)
Distance
c)
Average Speed
d)
All of These
36.

Jerry walked from home to school, then from the school to the park. What is his total displacement?

a)

2 km

b)

5 km

c)

8 km

d)

10 km

37.

A quantity that consists of both a magnitude and a direction

a)

displacement

b)

vector

c)

reference point

d)

distance

38.

What is the difference between Velocity and Speed ?

a)

Velocity has distance which speed does not have

b)

Velocity has time which speed does not have

c)

Velocity has direction but speed does not have

d)

both velocity and speed are the same

39.

Velocity is measured in

a)

m

b)

m/s

c)

m/s2

d)

km/s

40.

A plane flying with a speed of 3000 m/s west toward California is an example of...

a)

Speed

b)

Velocity

c)

Acceleration

d)

Direction

41.

a force is best defined as ---

a)

the application of weight

b)

a push or pull that is exerted on matter

c)

the flow of electric charges

d)

a bond in which electrons are shared

42.

Which law of motion predicts that a moving hockey puck will continue to move in the same direction at the same speed unless acted upon by another force?

a)

Newton's First Law of Motion

b)

Newton's Second Law of Motion

c)

Newton's Third Law of Motion

d)

Newton's Law of Universal Gravitation

43.

The force of an object, with a certain mass accelerating at a certain rate, can be determined by using the equation below.


force = mass x acceleration


Which object would have the greatest force?

a)

A 5 kg object accelerating at 10 m/s

b)

A 5 kg object accelerating at 20 m/s

c)

a 20 kg object accelerating at 4 m/s

d)

a 20 kg object accelerating at 3 m/s

44.

In the diagram below, a girl sits on a sled and slides down a hill of snow. Which arrow represents the force of friction opposing the motion of the sled down the hill?

a)

Arrow A

b)

Arrow B

c)

Arrow C

d)

Arrow D

45.
If a 10 kilogram object accelerates suddenly at 15 m/s2, how much force was applied to the object?
a)
150 Newtons
b)
15 Newtons
c)
150 kilograms
d)
100 kilograms
46.
What is the net force on the block? (click on the words to view the picture)
a)
5 Newtons up
b)
5 Newtons down
c)
15 Newtons up
d)
15 Newtons down
47.
8 N to the left , and 4 N to the right. Find the net force. Is this balanced 
a)
12 N Right  No
b)
4 N Left  No
c)
12 N Right  Yes
d)
4 N Left  Yes
48.
Which of the following statements is true? 
a)
Balanced forces cause a change in motion. 
b)
Unbalanced forces cause a change in motion. 
c)
Forces do not effect the change in motion. 
49.
Any time the forces are unbalanced, an object will remain at rest. True or false?
a)
true
b)
false
50.
When you tell the direction and speed of an object, you give its
a)
motion
b)
velocity
c)
acceleration
d)
mass
51.
What is the formula for force?
a)
F=M/A
b)
F=A/M
c)
F=M*A
d)
F=M*F
52.
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.
53.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
54.
Why is it harder for the boy in Image B to get down the hill?
a)
Motion
b)
Friction
c)
Work
d)
Displacement
55.
What is the meaning of acceleration?
a)
any change in the speed or direction of an object
b)
where an object is located
c)
the pull of gravity on an object
56.

A force that opposes motion is

a)

friction

b)

inertia

c)

acceleration

d)

momentum

57.

Newton's second law states.....

a)

If there is more mass then there is more acceleration

b)

An object at rest wants to be in motion

c)

Force = Mass x Acceleration

d)

The force exerted on an object is not related to mass or acceleration

58.

A force of 40 N acts upon a 2 kg block. Calculate the acceleration of the object.

a)

20 m/s2

b)

20 m/s

c)

80 m/s2

d)

80 m/s

59.

When an object is falling and the force of gravity is equal to the force of air resistance

a)

Terminal Velocity

b)

Top Speed

c)

Parachute Level

d)

Free Fall

60.

The sum of all forces acting on an object.

a)

Added forces

b)

Net force

c)

forcey force

d)

Equation force

61.

Which of the following is Stated by Newton’s second law of motion?

a)

For every action force, there is a reaction force

b)

Force usually exists as pairs

c)

Force is directly proportional to mass and inversely proportional to acceleration

d)

Acceleration is inversely proportional to mass and directly proportional to force

62.

if the same force is applied to two objects: one 10 kg and the other 15 kg.

10 kg will accelerate more than 15 kg

a)

True

b)

False

63.

The force that one surface exerts on another when the two rub against each other is called

a. c.

b.. d. .

a)

friction.

b)

inertia.

c)

acceleration

d)

gravity

64.
What Unit do we Measure Force in? 
a)
Newtons
b)
Joules
c)
Force
d)
Don't know
65.
Any change in an objects speed or direction
a)
Inertia
b)
Force
c)
Acceleration
d)
Reaction
66.
Balanced or Unbalanced?
a)
Balanced 
b)
Unbalanced
67.
a force that opposes motion between any surfaces that are touching
a)
velocity
b)
friction
c)
inertia
d)
position
68.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
69.
A balanced force has 
a)
no net force
b)
some net force
c)
a wee bit of net force
d)
a lot of net force
70.
Which of the following is a unit for acceleration?
a)
km/s
b)
m/s2
c)
mi/hr
d)
ft
71.

Of the following, which are vector ?

a)
Mass
b)

Acclereation

c)
Speed
d)
Velocity
72.
Acceleration is a change in ________. 
a)
direction 
b)
speed 
c)
velocity 
d)
distance 
73.
Acceleration of an object happens when things ________
a)
slow down
b)
go faster
c)
change direction (turn)
d)
All of the above
74.
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
75.
A type of friction that occurs when air pushes against a moving object causing it to decelerate.
a)
surface area
b)
air resistance
c)
velocity
d)
gravity 
76.
The amount of friction depends on the weight of the objects pressing together.
a)
True
b)
False
77.

Rough surfaces have _________ compared to smoother surfaces.

a)

greater friction

b)

less friction

c)

the same level of friction

78.

Without friction, an object in motion would never stop.

a)

true

b)

false

79.

Friction is a

a)

non - contact force

b)

contact force

c)

electrostatic force

d)

magnetic force

80.

In the figure a boy is seen pushing a box from right to left. The force of friction will act on the box

a)

from right to left

b)

from left to right

c)

vertically downwards

d)

vertically upwards

81.

How is this an example of Newton’s Third law?

a)

Only the ball is using the head

b)

They are both exerting an equal force on each other

c)

Only the head is pushing the ball

82.
For every action, there is an equal and opposite reaction.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
83.
What is the reaction force to a foot pushing down on the floor?
a)
The foot going through the floor
b)
The floor pushing back against the foot
c)
The floor breaking to the foot
84.

Force always come in________

a)

waves

b)

triplets

c)

pairs

85.

When a small car pushes a big truck, the truck applies an equal and opposite force on the car.

a)

False

b)

True

86.

Action-reaction pairs can cause a change in motion.

a)

True

b)

False

87.

Which of Newton's Laws gives the reason for why you can feel things that you touch?

a)

second

b)

third

c)

first

d)

all of the above

88.

What law is best described

a)

1st

b)

2nd

c)

3rd

d)

law of motion

89.
Newton's third law states that any action will have a(n) _______ and ______ reaction
a)
Equal and similar
b)
Equal and opposite
c)
Equal and different
d)
Greater and opposite
90.
Which one is balanced?
a)
top
b)
bottom
c)
both
d)
neither
91.

What is the sum of all forces acting on an object?

a)

net force

b)

motion

c)

third law

d)

collide

92.

The forces two objects apply to each other?

a)

force pair

b)

friction

c)

acceleration

d)

vector

93.
If an object is stationary (not moving) the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
94.
When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?
a)
The cannon moving forward
b)
The cannonball moving forward
c)
The cannon moving backward
d)
The cannonball moving backward
95.

You push against a wall and the wall is pushing back on you.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

96.
Why is the net force 0 in the image?
a)
Because the elephants are the same size
b)
Because they are both pulling the same amount of force in opposite directions
c)
Because they are elephants
d)
Because they are pulling away from each other.
97.

Newton's 3rd Law of Motion is also known as the Law of _____.

a)

inertia

b)

acceleration

c)

action and reaction

98.

Action reaction forces never cancel each other out because

a)

They act on different objects.

b)

They act on the same objects

c)

They do not act on objects.

99.

The forces in a force pair are in _______ direction

a)

opposite

b)

same

100.

The force that pushes perpendicular to the object's surface

a)

normal force

b)

contact force

c)

net force

d)

force pair

101.

When colliding objects bounce off each other.

a)

Elastic Collsion

b)

Noncontact force

c)

contact force

d)

friction

102.

What is the name of the missing force?

a)

gravity

b)

normal force

c)

applied force

d)

frictional force

103.

A book is at rest on a table. Check all the forces that act on it.

a)

gravity

b)

normal force

c)

applied force

d)

friction

104.

The normal force on the tennis ball...

a)

is always perpendicular

b)

is always parallel

c)

can be in any direction

d)

is in the opposite direction

105.

What type of collision is modeled?

a)

elastic collision

b)

inelastic collision

106.

What does it mean that the normal force is 'perpendicular'?

a)

90°90\degree  angle

b)

equal to

c)

opposite direction

d)

heavier than

107.

How many objects are involved in an action-reaction force pair?

a)

1

b)

2

c)

3

d)

as many as possible

108.
How many Laws of Motion are there?
a)

1

b)

8

c)

3

d)

12

109.
Who was the scientist who gave us the Laws of Motion?
a)
Sir Isaac Newton
b)
Albert Einstein
c)
Galileo Galilei
d)
Aristotle
110.

The swimmer pushes off of the wall of the pool and moves forward. What is the ACTION in this example?

a)

Swimmer pushes off the wall of the pool

b)

Swimmer moves forward

c)

Wall pushes back against swimmer.

111.

ACTION: The rocket engines ignite and push the gases downward

What is the reaction of the rocket?

a)

The rocket moves upward

b)

Mass of the rocket decreases

c)

The gases cause a reduction in air resistance

d)

The rocket moves downward

112.
Collisions can be ____________or ___________.
a)
fast or slow
b)
far or near
c)
elastic or inelastic
d)
none of the above
113.
While playing pool, Emma notices that the pool balls bounce apart.  What type of collision is this?
a)
Elastic
b)
Inelastic
c)
Explosive
d)
Force
114.
Jorge noticed a collision outside the coffee shop where two cars collided and stuck together.  What type of collision did he observe?
a)
Elastic
b)
Inelastic
c)
Completely inelastic
d)
none
115.

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

a)

normal force

b)

abnormal force

c)

static force

d)

inertia

116.
Mass is a measurement of 
a)
how much matter is present in an object
b)
how much weight is present in an object
c)
the amount a spring is compressed on a scale
d)
none of the answers are correct
117.

As the mass of an object increases, the gravitational force acting on it ......................

a)

Increases

b)

Decreases

c)

Stays the same

118.

Why do we have a stronger gravitational attraction with Earth than the sun?

a)

we are closer to center of Earth

b)

the Earth has a larger mass

c)

we are closer to center of sun

119.
Which objects have a STRONG force of gravity?
a)
Objects with GREATER mass, like elephants
b)
Objects with LESS mass, like mice
120.

The force of gravity (mass x gravity) is also known as...

a)

mass

b)

weight

c)

distance

d)

acceleration

121.

Earth's gravitional .......................... is 9.8 m/s2

a)

force

b)

weight

c)

acceleration

d)

mass

122.
Which model has greater gravitational attraction (if any)
a)
Model A
b)
Model B
c)
Both Model A and Model B (same gravity)
123.

...................... is the first one who discovered the Earth's gravitional force.

a)

Einstein

b)

Galileo

c)

Darwin

d)

Newton

124.

What is the measuring unit used to measure gravity?

a)

pounds

b)

grams

c)

newtons

d)

friction

125.

The gravitational force exerted by an object depends on its

a)

volume

b)

mass

c)

weight

126.

________is what makes up all things in the universe.

a)

Weight

b)

Mass

127.

Gravitational force always ____________.

a)

pulls

b)

pushes

128.
A force of attraction between objects that is due to their masses.
a)
Force
b)
Gravity
c)
Gravitational Pull
d)
Weight
129.
What is gravitational force?
a)
It makes objects at rest start moving.
b)
It makes objects that are moving stop.
c)
The force of attraction between two objects.
d)
It pulls you into space.
130.

As the mass of an object increases, the pull of gravity

a)

Increases

b)

Decreases

c)

Stays the same

131.
What does the strength of gravity between two objects depend upon?
a)
Mass & distance
b)
Mass & weight
c)
Gravity & inertia
d)
Inertia & mass
132.

The force of gravity (mass x gravity) is also known as...

a)

mass

b)

weight

c)

distance

d)

acceleration

133.

Earth's gravity, 9.8 m/s2, is considered a/an...

a)

force

b)

weight

c)

acceleration

d)

mass

134.
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
135.

Mass and weight are the same thing.

a)

True

b)

False

136.

The definition of gravitational field is

a)

The region of space surrounding a body where other bodies will feel an attractive force due to it.

b)

The region of space surrounding a body where other bodies will feel an repulsive force due to it.

c)

The region of space surrounding a charge where other charges will feel an attractive force due to it.

d)

The region of space surrounding a charge where other charges will feel an repulsive force due to it.

137.

The force between two masses

a)

gravitational force

b)

force

c)

mass

d)

attract

138.

Kinetic energy is

a)

stored energy

b)

energy at rest

c)

energy in motion

d)

stationary

139.

What kind of energy does the picture show?

a)

Potential Energy

b)

Chemical Energy

c)

Thermal Energy

d)

Kinetic Energy

140.

What kind of energy does the picture show?

a)

Thermal Energy

b)

Kinetic Energy

c)

Sound Energy

d)

Potential Energy

141.

Which truck has more kinetic energy?

a)

The truck going 40 mph

b)

The truck going 90 mph

c)

Both have the same amount of kinetic energy

142.
Kinetic energy is the energy of ____________ and potential energy is the energy of ________.
a)
heat, position
b)
static, motion
c)
motion, position
143.
Which point has the most potential energy?
a)
G
b)
f
c)
b
d)
a
144.
When a pendulum swings, at which point is potential energy at its greatest?
a)
1
b)
2
c)
3
d)
4
145.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
146.
Where would a person have to be located to have the minimum gravitational potential energy?
a)
up on the roof
b)
down in the basement
c)
in the middle
d)
outside
147.

Energy and work are measured in

a)

kilograms

b)

meters

c)

Joules

d)

m/s

148.
2. The diagram to the right represents a diver’s motion from the top of a high diving board into a pool of water. At what point does the diver have the greatest kinetic energy and the least potential energy?
a)
1
b)
2
c)
3
d)
4
149.

This graph depicts what type of relationship between kinetic and potential energy?

a)

Non-Linear

b)

Linear

c)

Inverse

d)

Poly-atomic

150.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
same
151.
__________ is stored energy. 
a)
Potential
b)
Kinetic
c)
None of the above 
d)
All of the above 
152.
When you stretch a rubber band, you are storing __________ energy. 
a)
kinetic 
b)
potential
c)
none of the above
d)
all of the above 
153.
Which type of energy increases when you compress a spring?
a)
elastic potential energy
b)
kinetic energy
c)
radiant energy
d)
sound energy
154.

At which point does the ball has the greatest gravitational potential energy (GPE)?

a)

A

b)

G

c)

D

d)

C

e)

G

155.

Which would have the LEAST gravitational potential energy (GPE)?

a)

A ball sitting on the ground

b)

Moon viewed from the Earth

c)

An airplane flying 30,000 feet above the ground

d)

A rock sitting on top of Mt. Everest

156.

Which of the following is an example of gravitational potential energy?

a)

A moving bicycle

b)

A stretched rubber band

c)

A book on a high shelf

d)

A charged battery

157.

When a rock is at the top of a hill, what type of energy is at its maximum?

a)

Kinetic energy

b)

Elastic potential energy

c)

Gravitational potential energy

d)

Chemical potential energy

158.
What type of potential energy is shown in the image?
a)
elastic
b)
gravitational
c)
chemical
159.

The sum of potential and kinetic energy

a)

Mechanical Energy

b)

Elastic Energy

c)

Thermal Energy

d)

Electrical Energy

160.

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

161.

Where would this tossed baseball have the least amount of kinetic energy?

a)

point W

b)

point X

c)

point y

d)

point z

162.

Where would this tossed baseball have the greatest amount of kinetic energy?

a)

point W

b)

point X

c)

point y

d)

point z

163.

Increasing an object's mass will increase its kinetic energy.

a)

true

b)

false

164.

Increasing an object's speed will increase its kinetic energy.

a)

false

b)

true

165.

Which graph represents the relation between velocity and K.E?

a)
b)
166.

Which graph represents the relation between mass and K.E

a)
b)
167.

If the velocity is doubled, the K.E will

a)

Increase by a factor of 4

b)

Decrease by a factor of 4

c)

Increase by a factor of 2

d)

Decrease by a factor of 2

168.

gravitational potential energy is due to interaction of objects in_______________

a)

gravitational field

b)

magnetic field

c)

electric field

169.

gravitational potential energy is effected by _____ ( select 2 answers)

a)

mass of object

b)

height of object

c)

shape of object

d)

color of object

170.

when object height increases , gravitational potential energy________

a)

increases

b)

decreases

c)

does not change

171.

____________ is the ability to do work.

a)

Energy

b)

Force

c)

Friction

d)

Motion

172.

When you are holding a book, energy is stored between the book and Earth; this type of energy is called ________ potential energy.

a)

Kinetic Energy

b)

Chemical Energy

c)

Gravitational Potential Energy

d)

Electric Energy

173.

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

174.

Energy can not be created nor destroyed: it can only be

a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
175.

What is the Law of Conservation of Energy?

(a)  

176.

when the kinetic energy of an object is 30 J and its potential energy is 50 J, so its mechanical energy is ................. J

a)

100

b)

20

c)

1500

d)

80

177.

What are the two forms of energy that make up mechanical energy?

a)

Chemical

b)

Potential

c)

Kinetic

d)

Electrical

178.
Which graph represents the relationship between potential and kinetic energy from the picture below?
a)
Option 1
b)
Option 2
c)
Option 3
d)
Option 4
179.

The graphs below show the potential and kinetic energy at different points along the rollercoaster. Which graph would be the correct graph for point A?

a)
b)
c)
d)
180.

This is an example of what type of energy?

a)

Kinetic

b)

Potential

c)

Electric

d)

Thermal

181.

What does the PE vs. KE graph look like at Point X?

Hint: pay close attention to the graphs so you don't get tricked 👀

a)
b)
c)
d)
182.
Force is a _____ or _______
a)
simple    complex
b)
push     pull
c)
up      down
d)
in      out
183.
The unit used to measure work is the 
a)
Watt
b)
Newton
c)
Joule
d)
meter
184.
A force exerted over a distance to move an object is ______________________.
a)
power
b)
work
c)
momentum
d)
Watt
185.
Which of the following is the best example of work being done? 
a)
doing homework
b)
lifting a box
c)
pushing a stationary box
d)
holding a box
186.
An example of work is holding a heavy bag.
a)
True
b)
false
187.
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
188.

If mass is doubled the K.E is

a)

Halved

b)

Doubled

c)

Increased by a factor of 4

d)

Decreased by a factor of 4

189.

Friction converts kinetic energy into

a)

potential energy.

b)

thermal energy.

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