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Worksheets

Forces

Total questions: 200

Worksheet time: 6hrs 21mins

Name
Class
Date
1.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
2.
(T or F?) A balanced force is only an object that is not moving. 
a)
True 
b)
False
3.
If an object is stationary (not moving) the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
4.
The force that pulls things toward earth.
a)
Speed
b)
Gravity
5.
Which one is balanced?
a)
top
b)
bottom
c)
both
6.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
d)
cannot be determined
7.
At which letter is potential energy the highest?
a)
b
b)
c
c)
a 
d)
d 
8.
In the diagram, a wind turbine is transforming energy from the wind. Between which two steps in the diagram is mechanical energy being converted into electrical energy?
a)
1 and 2
b)
2 and 3
c)
3 and 4
d)
4 and 5
9.
(6.9C) When a lion eats a zebra and then uses the energy from the zebra to run, the lion's body converts- 
a)
chemical energy to mechanical energy
b)
electrical energy to chemical energy
c)
chemical energy to light energy
d)
mechanical energy to chemical energy
10.
What type of force is shown in the picture?
a)
The Cat force
b)
Star Wars Force
c)
Unbalanced force
d)
Balanced  force
11.
What is a Force?
a)
The distance
b)
Mass
c)
A push or pull
d)
Give me a  failing grade 
12.
An _______ force must act on an object for it to CHANGE it's motion
a)
balanced
b)
unbalanced
c)
gravitational
d)
electrical
13.

If the net force is equal to zero, the forces acting on the object are

a)

balanced

b)

unbalanced

14.
Balanced forces do not change the objects speed or 
a)
direction
b)
distance 
c)
time
d)
mass
15.
The unit of force is
a)
m/s
b)
m/s^2
c)
newton
d)
kg
16.
Forces that have a net force of zero ( the object is still).
a)
Balanced force
b)
Unbalanced force
17.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
18.
Jonny and Patty are pushing against a basketball. Both of them push against theball on opposite sides with a force of 20 N to keep the ball still. What is the net force?
a)
400 N
b)
24 N
c)
0 N
d)
40 N
19.
What is the net force in this picture?
a)
50 Newtons to the right
b)
950 Newtons to the right
c)
950 Newtons to the left
d)
50 Newtons to the left
20.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
21.
What are balanced forces?
a)
Forces in the same direction
b)
Forces of the same size
c)
forces of the same size in opposite directions
22.
The force that opposes the motion of two surfaces sliding past each other is called ___________.
a)
acceleration
b)
inertia
c)
friction
d)
unbalanced
23.
What is the unit of force?
a)
Kilogram
b)
Meter
c)
Pascal
d)
Newton
24.
What type of force?
a)
Magnetic
b)
Gravitational
c)
Applied
d)
Normal
25.
What force brings the pencil down?
a)
Applied
b)
Magnetic
c)
Normal
d)
Gravitational
26.
An _______ force must act on an object for it to CHANGE it's motion
a)
balanced
b)
unbalanced
c)
gravitational
d)
electrical
27.

What is defined as a push or pull?

a)

force

b)

motion

c)

vector

d)

speed

28.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
29.
A north pole and a south pole will attract.
a)
True
b)
False
30.
What is the force that causes objects to fall to Earth?
a)
Air resistance
b)
Gravity
c)
Water resistance
d)
Pressure
31.
Which of these is NOT a force?
a)
Friction
b)
Air resistance
c)
Water resistance
d)
Electrical resistance
32.
What is the name of the units that we measure force in?
a)
Einsteins 
b)
Newtons
c)
Kg
d)
Metres
33.
In which direction does gravity act?
a)
Downwards
b)
Upwards
c)
In all directions
d)
Towards the centre of the Earth
34.
Which is the correct definition of a 'force'?
a)
An influence, which cannot be measured, that causes something to move, stop moving or change direction.
b)
An influence, which can be measured, that causes something to move, stop moving or change direction.
c)
Something which has power.
d)
An influence, which can be measured, that causes something to move.
35.
When two objects rub together, what force do they produce
a)
Gravity
b)
Air resistance
c)
Friction
d)
Water resistance
36.
What type of force is air resistance?
a)
Contact
b)
Non-contact
37.
What force does a parachute use to slow things down before hitting the ground?
a)
Friction
b)
Air resistance
c)
Water resistance
d)
Wind
38.
The speedometer on your car tells you
a)
average velocity
b)
instantaneous velocity
c)
average speed
d)
instantaneous speed
39.
What is this graph representing?
a)
Constant Speed
b)
Acceleration (speeding up)
c)
Deceleration (slowing down)
d)
No motion
40.
If you run around the football field (which is 2 miles) 3 times, what is your distance?
a)
0 miles
b)
3 miles
c)
6 miles
d)
9 miles
41.
What is the speed of an object that travels 60 meters in 4 seconds?
a)
240 m/s
b)
15 m/s
c)
0.067 m/s
d)
15 mph
42.
A measurement of how fast an object is moving
a)
Velocity
b)
Speed
c)
Vector
d)
Acceleration
43.
A description of the speed and direction of an object's motion
a)
Velocity
b)
Speed
c)
Acceleration
d)
Vector
44.
Can be measured in seconds (s)
a)
Distance
b)
Time
c)
Speed
d)
Acceleration
45.
What is the speed of an object that travels 20 meters in 4 seconds?
a)
80 m/s
b)
0.2 m/s
c)
5 m/s
d)
24 m/s
46.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
47.
What is speed?
a)
how far you go
b)
how much distance is covered over a period of time
c)
how fast you accelerate
d)
the change in the location of a object
48.
The correct equation to calculate speed is
a)
distance/time
b)
time/distance
c)
distance x time
d)
distance/time2
49.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
50.
Find the velocity of a truck that travels 75 miles north in 2.5 hours.
a)
187.5 mph north
b)
30 mph north
c)
300 mph north
d)
200 mph north
51.
Find the velocity of a plane that traveled 3000 miles west in 5 hours.
a)
65 mph west
b)
6 mph west
c)
600 mph west
d)
6000 mph west 
52.
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
53.
How far will a person go if they jog for 2 hours at a speed of 12 km/hr?
a)
6 km
b)
0.5 km
c)
10 km
d)
24 km
54.
It took 3.5 hours for a train to travel the distance between two cities at a velocity of 120 miles/hr.  How many miles lie between the two cities? 
a)
34 miles 
b)
420 miles
c)
120 miles 
d)
360 miles 
55.
A plane traveled for about 2.5 hours at a velocity of 1200 km/hr.  What distance did it travel?
a)
3000 km
b)
480 km
c)
3000 m
d)
480 m 
56.
How long would it take for a car to travel a distance of 200 kilometers if it is traveling at a velocity of 55 km/hr? 
a)
20 min
b)
11,000 min
c)
3.6 hrs
d)
5 hrs 
57.
John took 90 minutes to bicycle to his grandmother's house, a total of six kilometers.  What was his speed (pay attention to units)? 
a)
540 km/hr
b)
.066 km/hr
c)
4 km/hr
d)
9 km/hr
58.
A girl is pedaling her bicycle at a speed of 0.10 km/min.  How far will she travel in two hours? (pay attention to units) 
a)
20 km 
b)
.2 km
c)
3 km 
d)
12 km 
59.
What is the formula to calculate speed?
a)
S = t/d
b)
S = d/t
c)
S = d x t
d)
S = t x d
60.
What is speed?
a)
how far you go
b)
how much distance is covered over a period of time
c)
how fast you accelerate
d)
the change in the location of a object
61.
A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?
a)
10 m/s
b)
1000 m/s
c)
100 seconds
d)
10 seconds
62.
Total distance divided by total time is
a)
average speed
b)
constant speed
c)
instantaneous speed
d)
acceleration
63.
What is the speed of an object that travels 60 meters in 4 seconds?
a)
240 m/s
b)
15 m/s
c)
0.067 m/s
d)
15 mph
64.
Acceleration: is the rate of change in ___________.
a)
speed
b)
distance
c)
velocity 
d)
displacement 
65.
In each of the following cases, determine where the car has no acceleration ?
a)
A car shortly after a stoplight turns green.
b)
A car approaching a red light
c)
A car with the cruise control set at 80 km/h
d)
A car moving down a ramp
66.

A roller coasters accelerates from an initial speed of 6.0 m/s to a final speed of 70 m/s over 4 seconds. What's the acceleration?

a)

24 m/s2

b)

18 m/s2

c)

16 m/s2

d)

16 m/s

67.
The SI unit for acceleration is
a)
mph
b)
ft/sec2
c)
m/s2
68.
A car accelerates from a standstill to 70 m/s in 10 seconds.  What is the acceleration?
a)
0.7m/s2
b)
7m/s2
c)
14m/s2
d)
none of the above
69.
When are you undergoing an acceleration in a car? 
a)
speed up
b)
slow down
c)
make turns
d)
All of the above 
70.
A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?
a)
-7.5 m/s
b)
-7.5 m/s2
c)
-0.5 m/s2
d)
7.5 mi//hr
71.
Why does a car accelerate as it round a corner at a constant speed?
a)
Its direction changes
b)
It doesn't
c)
It slows down
d)
Its speeds up  
72.
Acceleration only takes place when things speed up. 
a)
True
b)
False
73.
A golf ball accelerates off a tee at 15m/s2, changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?
a)
750 seconds
b)
35 seconds
c)
0.3 seconds
d)
3.3 seconds
74.
A ball of clay is thrown at a wall at a velocity of 28.0 m/s.  After it hits the wall, it takes 0.020 s to stop.  What is the acceleration of the clay when it hits the wall?
a)
1400 m/s2
b)
-1400 m/s2
c)
0.56 m/s2
d)
-0.56 m/s2
75.
A negative acceleration means that your object is _____. 
a)
not accelerating
b)
not moving
c)
speeding up 
d)
slowing down 
76.

speed of an object in a particular direction

a)

motion

b)

velocity

c)

speed

d)

acceleration

77.

when an object changes its position compared to a reference point.

a)

acceleration

b)

speed

c)

motion

d)

reference point

78.

total distance traveled divided by total time taken to travel that distance

a)

velocity

b)

motion

c)

acceleration

d)

average speed

79.

the rate at which speed or velocity changes

a)

acceleration

b)

average speed

c)

motion

d)

reference point

80.

an object that appears to stay in place and that helps you detect motion in another object

a)

acceleration

b)

average speed

c)

motion

d)

reference point

81.
If a 10 kilogram object accelerates suddenly at 15 m/s^2, how much force was applied to the object?
a)
150 Newtons
b)
15 Newtons
c)
150 kilograms
d)
100 kilograms
82.
If a force of 50 Newton's was applied to an object with a mass of 500 grams, what will the object's acceleration be?
a)
10 m/s^2
b)
.1 m/s^2
c)
100 m/s^2
d)
1 m/s^2
83.
45 m/s2 is the... 
a)
Mass
b)
Force 
c)
Acceleration
d)
weight
84.
A 20 kg bike accelerates at 10 m/s2.  what was the force?
a)
25 Newtons
b)
20 Newtons
c)
200 Newtons
d)
10 Newtons
85.
Unit of mass
a)
m/s 2
b)
m/s
c)
newtons
d)
kg
86.
The mass of a car is 1000 kg.  How much force would be required to accelerate the car at a rate of 3 m/s2? 
a)
1000 ÷ 3
b)
3 ÷ 1000
c)
1000 x 3
87.
A force of 250 N is applied to an object that accelerates at a rate of 5 m/s2.  What is the mass of the object? To solve this problem you must do - 
a)
250 ÷ 5
b)
5 ÷ 250
c)
250 x 5
88.
A 5 kg block is pulled across a table by a net force of 32 N. Calculate the acceleration of the object. To solve this problem you must do - 
a)
32 ÷ 5
b)
5 ÷ 32
c)
32 x 5
89.
A skier needs to apply a force of 132 N to accelerate at a rate of 2 m/s2. What is the mass of the skier? To solve this problem you must do - 
a)
132 ÷ 2
b)
2 ÷ 132
c)
132 x 2
90.
The masses of four objects are given in this table. If all objects are struck with the same amount of force, which one will have the greatest acceleration?
a)
Object 1
b)
Object 2
c)
Object 3
d)
Object 4
91.
A skier needs to apply a force of 132 N to accelerate at a rate of 2 m/s2. What is the mass of the skier? The answer to this question is most likely (HINT: Look at the units!!!) - 
a)
66 N
b)
66 m/s2
c)
66 kg
92.
A force of 90N is applied to each cart below, which one will accelerate the fastest?
a)
Cart 1
b)
Cart 2
c)
Cart 3 
d)
Cart 4
93.
What is the SI unit used to measure force? 
a)
pounds 
b)
grams 
c)
newtons 
d)
kg/ m2
94.
A basketball with a mass of 0.60 kg is accelerated with a force of 10.8 N. If resisting forces are ignored, what is the acceleration of the basketball to the nearest m/s2?
a)
16 m/s2
b)
17 m/s2
c)
18 m/s2
d)
19 m/s2
95.

The equation that connects force, mass and acceleration is....

a)

F = a ÷ m

b)

F= m ÷a

c)

F= m × a

d)

F = m + a

96.

To calculate Fnet

a)

Fnet = m x a

b)

Fnet = m ÷ a

c)

Fnet = a ÷ m

d)

Fnet = m + a

97.

To calculate m

a)

m = Fnet × a

b)

m = Fnet ÷ a

c)

m = Fnet + a

d)

m = a ÷ Fnet

98.

The units for Fnet are

a)

n

b)

N

c)

Nt

d)

kg

99.

To calculate a

a)

a = Fnet × m

b)

a = Fnet ÷ m

c)

a = Fnet + m

d)

a = m ÷ Fnet

100.

Fnet means

a)

overall or resultant force

b)

friction force

c)

thrust force

d)

weight force

101.

An object is travelling at constant speed.

a)

Thrust and friction forces are equal and opposite

b)

Thrust force > Friction force

c)

Friction force > Thrust force

d)

Thrust and friction forces are equal and act in the same direction

102.

An object is accelerating.

a)

Thrust and friction forces are equal and opposite

b)

Thrust force > Friction force

c)

Friction force > Thrust force

d)

Thrust and friction forces are equal and act in the same direction

103.

An object is decelerating.

a)

Thrust and friction forces are equal and opposite

b)

Thrust force > Friction force

c)

Friction force > Thrust force

d)

Thrust and friction forces are equal and act in the same direction

104.

Mass = 10 kg. a = 10 ms-2. Calculate the force.

a)

10N

b)

100N

c)

1 N

d)

1000N

105.

Mass = 4 kg and a = 0.2 ms-2. Calculate the force.

a)

8N

b)

80 N

c)

2 N

d)

0.8N

106.

Force = 20 N and Mass = 4 kg. Calculate the acceleration.

a)

80 N

b)

80 ms-2

c)

5 ms-2

d)

0.2 ms-2

107.

Force = 25 N and Mass = 5 kg. Calculate the acceleration.

a)

5 ms-2

b)

125 ms-2

c)

30 ms-2

d)

4 ms-2

108.

Force = 30 N and acceleration = 2 ms-2. Calculate the mass.

a)

15 ms-2

b)

60 N

c)

15 kg

d)

15 g

109.

Force = 12 N and acceleration = 2 ms-2. Calculate the mass.

a)

6 ms-2

b)

24 kg

c)

6 kg

d)

6 g

110.

Describe the motion of this car

a)

accelerating to the left

b)

decelerating to the left

c)

travelling at constant speed

d)

at rest (stopped)

111.

What is the net force in the horizontal direction?

a)

3200 N

b)

6400 N

c)

0 N

d)

12000 N

112.

Describe the motion of the lawn mower

a)

constant speed

b)

accelerating

c)

at rest / stationary

d)

decelerating

113.

What is the net force to the right?

a)

5000 N

b)

2000 N

c)

0 N

d)

3000 N

114.

Which would hit a wall with a greater force, a car or bus with the same acceleration?

a)

car

b)

bus

c)

both the same

115.

Why does a car accelerate faster with just the driver, compared to driver + 3 passengers?

a)

Car and driver has less mass than car, driver + 3 passengers

b)

Car and driver has more mass than car, driver + 3 passengers

c)

Car has less friction (drag)

d)

Car is accelerating faster

116.

A 2 kg brick is pulled by a force of 10N. Friction force is 4 N. What is the acceleration?

a)

3 N

b)

3 ms-2

c)

5 ms-2

d)

2 ms-2

117.

F=ma. If force is kept the same but the mass is doubled, then the acceleration will....

a)

stay the same

b)

be halved

c)

be doubled

d)

be zero

118.
Wheels on a skateboard most likely experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
119.
Sally experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
120.
Wheels of a shopping cart experience-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
121.
Swimming fish experience-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
122.
The amount of friction depends on the weight of the objects pressing together.
a)
True
b)
False
123.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
124.
What are 2 factors that determine the amount of friction between 2 objects?
a)
Force and roughness between surfaces
b)
hills and valleys and how smooth or rough the surface is
c)
Amount of force and amount of surface the comes in contact
d)
The force and the weight exerted on the surfaces
125.

the force of friction acts in the direction__________ to the motion of the object

a)

as same as

b)

opposite

c)

both

d)

all of the above

126.

without friction, an object in motion would never stop

a)

true

b)

false

127.

material with _______________ surfaces have less friction

a)

smooth

b)

rough

c)

both

128.

you can walk because there is friction between your __________ and ______________

a)

ground and air

b)

feet and ground

c)

feet and air

d)

air and ground

129.

friction helps you write on a paper or black board.

a)

true

b)

false

130.

these are used to reduce unwanted heat in cars

a)

powder

b)

oil

c)

coolants

131.

having streamlined vehicles can reduce friction

a)

true

b)

false

132.

these are examples of lubricants

a)

oil,

b)

grease

c)

powder

d)

all of the above

133.
Which unit of measurement would you use to measure the weight of an elephant?
a)
Ounces
b)
Pounds
c)
Tons
d)
Cups
134.
Which unit of measurement would you use to measure the weight of a feather?
a)
Ounces
b)
Pounds
c)
Gallons
d)
Kilograms
135.
Which unit of measurement would you use to measure the weight of a car?
a)
Tons
b)
Pounds
c)
Gallons
d)
Grams
136.
Which unit of measurement would you use to measure the weight of a tiger
a)
Ounces
b)
Inches
c)
Pints
d)
Pounds
137.
Which unit of measurement would you use to measure the weight of an airplane
a)
Grams
b)
Tons
c)
Cups
d)
Pounds
138.
Which unit of measurement is the largest?
a)
Grams
b)
Kilograms
139.
Which unit of measurement would you use to measure the weight of a bag of apples?
a)
Tons
b)
Grams
c)
Pounds
d)
Centimeters
140.
Which item would go on the left? (the side that is up)
a)
jellybean
b)
book
c)
hammer
d)
a brick
141.
What is the weight of the bowl of apples?
a)
2 ounces
b)
2 pounds
c)
2 gallons
d)
2 inches
142.
Which item weight more?
a)
The lemon
b)
The tape dispenser
143.
Bobby used a 50 gram, 20 gram and 10 gram on a double ban balance to find the mass of an object.  What is the mass of the object?
a)
50 g.
b)
20 g.
c)
10 g.
d)
80 g.
144.
What is the weight, in ounces, of the pencils?
a)
5 oz.
b)
0 oz.
c)
10 oz.
d)
25 oz.
145.
Which objects have a STRONG force of gravity?
a)
Objects with GREATER mass, like elephants
b)
Objects with LESS mass, like mice
146.
What is the SI unit used to measure force? 
a)
pounds 
b)
grams 
c)
newtons 
d)
friction
147.
As distance between two objects increase the pull of gravity 
a)
Increases
b)
Decreases
c)
Stays the same
148.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
149.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
150.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
151.
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
152.
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
153.
What does this tool measure?
a)
weight
b)
meters
c)
mass
d)
force
154.
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
155.
As mass increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
156.
Which model has greater gravitational attraction (if any)
a)
Model A
b)
Model B
c)
Both Model A and Model B (same gravity)
157.
Which system has the greater gravitational attraction between the two objects (if any)?
a)
System A
b)
System B
c)
Same gravitational attraction fro System A and System B
158.
What best describes the mass and weight of a person as they move around the universe?
a)
mass and weight changes
b)
Mass and weight stays constant
c)
weight remains constant, mass changes
d)
Mass stays constant, weight changes
159.
How does changing the distance of the string in the model represent the orbits of the planets?
a)
the longer the string means the larger the planet
b)
the longer the string, the longer the orbit time of a planet
c)
the shorter the string, the longer the orbit time of the planet
d)
the shorter the string, the smaller the planet
160.
When only the force of gravity is acting on an object, we say that the object is in ___________________________.
a)
Terminal Velocity
b)
Free Fall
c)
Projectile motion
d)
Centripetal Force
161.
The force of gravity on Jupiter is a little more than 2 times the gravitational force on Earth. If an object has a mass of 50 kg and a weight of 490 N on Earth, what would be the object's approximate mass and weight on Jupiter?
a)
50 kg and 490 N
b)
100 kg and 490 N
c)
50 kg and 980 N
d)
100 kg and 980 N
162.
If a bowling ball and a feather were dropped at the same time, in a room with no air resistance (vacuum), which object will hit the ground first?
a)
Bowling Ball
b)
Feather
c)
Both would hit at the same time
d)
Neither one would hit the ground because air is what pushing things down.
163.
What force causes objects falling near Earth's surface to slow down?
a)
Gravity
b)
Air Resistance
c)
Centripetal Force
d)
Newtons
164.
Gravity attracts all objects towards one another. 
a)
True
b)
False 
165.
The amount of matter in an object.
a)
force 
b)
mass
c)
weight 
d)
pressure 
166.
A person would weigh less on the moon than on the Earth because...
a)
the moon has less mass, and therefore less gravity
b)
the moon has more mass, and therefore less gravity
c)
the moon has less mass, and therefore more gravity
d)
the moon has more mass, and therefor more gravity
167.
What is gravity?
a)
A force
b)
Energy
c)
A push
d)
All of them
168.

Complete this sentence.


It is not the difference in gravity that causes the objects to fall at different speeds, it's the difference in the amount of _______________.

a)

Weight

b)

Air

c)

Light

d)

Friction

169.

Is air resistance Friction?

a)

No

b)

Yes

170.

Magnets have two poles. What are they?

a)

East and West

b)

North and South

171.

Pick the word that matches the definition:


is the frictional force air exerts against a moving object.

a)

Friction

b)

Air Resistance

c)

Gravity

d)

Force

172.

a piece of material (as of iron, steel, or alloy) that is able to attract iron.

a)

Gravity

b)

Force

c)

Friction

d)

Magnetic

173.

is to exert a force that draws something in

a)

repel

b)

force

c)

attract

d)

motion

174.

to thrust back or away. to resist effectively

a)

attract

b)

force

c)

repel

d)

motion

175.

A push or a pull

a)

Friction

b)

Gravity

c)

Force

d)

Motion

176.

is the resistance of motion when one object rubs against another

a)

Force

b)

Motion

c)

Gravity

d)

Friction

177.

When the test asks you to support your claim, what does that mean?

a)

write the definition of a word

b)

claim to be crazy

c)

answer the question

178.
If a piece of matter changes shape, what happens to its mass?
a)
It increases
b)
It decreases
c)
it changes randomly
d)
it stays the same
179.
Which of the following is a unit of mass?
a)
kilogram
b)
liter
c)
meter
d)
pound
180.
Anything made of matter must _____________________.
a)
take up space and have mass
b)
have mass and be a solid
c)
be a solid and not move
d)
take up space and be a liquid
181.
The mass of an object ___________________________.
a)
changes, depending on where it is located
b)
changes randomly
c)
changes, depending on temperature
d)
does not change
182.
One piece of matter is cut into two pieces.  What would be the mass of the two new pieces if we combined them?
a)
the two pieces would have the same mass as the original piece
b)
the two pieces would have more mass than the original piece
c)
the two pieces would have less mass than the original piece
d)
there is no way to tell which would have more mass
183.
John measures a rock and finds it to be 16 grams.  What does John know about the rock?
a)
its mass
b)
its weight
c)
its volume
d)
its momentum
184.
Mass is a property of ___________.
a)
waves
b)
energy
c)
matter
d)
light
185.

What two things determine the gravity of an object?

a)

mass & weight

b)

mass & distance

c)

density & mass

d)

volume & distance

186.

A brick and a pencil are dropped at the same time from the same height. Which one would hit the ground first?

a)

brick

b)

pencil

c)

both would hit at the same time

187.

Which is a use of air resistance?

a)

swimming in a pool

b)

opening a parachute

c)

falling asleep

d)

going to the moon

188.

What keeps the planets in orbit around the sun?

a)

gravity

b)

friction

c)

density

d)

distance

189.

Which statement about gravity is true?

a)

gravity causes objects to pull towards one another

b)

gravity causes objects to push away from each other

c)

gravity only takes place between planets

d)

the moon doesn't have any gravity

190.

A boy throws a baseball up in the air. Why does the baseball fall back down to the ground?

a)

the mass of the baseball decreases, causing it to fall

b)

the weight of the ball causes the ball to fall

c)

the force of gravity causes the ball to fall

d)

the density of the ball causes the ball to fall

191.

When you drop a hammer and a feather, why does the feather fall slower?

a)

air resistance causes the feather to slow down

b)

gravity pulls harder on the hammer than the feather

c)

gravity pulls harder on the feather than the hammer

d)

air resistance causes the hammer to fall slower

192.
Name the missing force...
a)
frictional force
b)
weight force
c)
thrust
d)
buoyant force
193.
Name the missing force...
a)
applied force
b)
weight force
c)
tension force
d)
drag
194.
Name the missing force...
a)
tension force
b)
gravitational force
c)
normal force
d)
applied force
195.
Name the missing force...
a)
weight force
b)
normal force
c)
applied force
d)
frictional force
196.
What is force?
a)
A push exerted on an object
b)
A push or pull exerted on an object
c)
A pull exerted on an object
d)
Nothing
197.
The force that pulls things toward earth.
a)
Speed
b)
Gravity
198.
Force depends on
a)
Force
b)
mass
c)
acceleration
d)
mass and acceleration 
199.
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
200.
The SI Unit of force is
a)
Pascal
b)
Meter/second
c)
Newton
d)
kg

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