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Physics Fall Final Exam Review 2019/2020

Total questions: 147

Worksheet time: 3hrs 35mins

Name
Class
Date
1.
An experiment is conducted to test how different cleats change an athletes running speed.  Six different types of cleats are tested and the 100m run time is recorded.  What is the independent variable?
a)
The type of cleat
b)
The run time
c)
The 100 meters
d)
The athlete
2.
A test is set up to test which brand of soda creates the biggest foam explosion when adding a Mentos candy.  Three different sodas were tested. They measured the height of the foam eruption.   What is the dependent variable?
a)
Brand of soda
b)
Number of mentos candies used
c)
Height of foam eruption
d)
Temperature of soda
3.
Which of the following is a quantitative observation?
a)
The bird is very colorful.
b)
The bird has 4 different colors on him.
c)
The bird has many, many feathers.
d)
It is a bird. 
4.
The yard is wet so it must have rained last night is an example of a (an)
a)
constant
b)
control
c)
inference
d)
quantitative data
5.
Testing a hypothesis often involves a(n):
a)
answer
b)
experiment
c)
problem
d)
safety check
6.

Stephen predicted that seeds would start to grow faster if an electric current traveled through the soil in which they were planted is a(n) example of what step.

a)

question

b)

experiment

c)

form a hypothesis

d)

analyze/conclusions

7.

Johnathan’s data showed that household cockroaches moved away from raw cucumber slices is (a)n example of what step?

a)

question

b)

experiment

c)

form a hypothesis

d)

analysis/conclusions

8.

Rene grew bacteria from the mouth on special plates in the laboratory. She placed drops of different types of mouthwash on bacteria on each plate is an example of what step?

a)

question

b)

experiment

c)

form a hypothesis

d)

analysis/conclusion

9.

Experiment: Sendel wants to see if taking the backroads to work is faster than taking the highway during rush hour.


In Sendel's driving experiment, what is the independent variable?

a)

What time of day she drives

b)

The route she takes to work

c)

The speed at which she drives

d)

The time is takes to get to work

10.
This variable in an experiment is the one being deliberately changed by the scientist. 
a)
dependent variable
b)
independent variable
c)
data
d)
control group
11.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
12.
10 cm = _____mm
a)
100
b)
1,000
c)
1
d)
0.1
13.
60 L = _______mL
a)
60,000 
b)
0.06
c)
600
d)
6,000
14.
Is 4,000 mg greater than, less than, or equal to 4 g?
a)
greater than
b)
less than
c)
equal to
15.
Is 20 g greater than, less than, or equal to 2 kg?
a)
greater than
b)
less than
c)
equal to
16.
What is a force? 
a)
combination of all forces acting on an object
b)
is a push or a full
c)
when life is stable
d)
is an arrow that represents the magnitude and direction of a quantity
17.
The combination of all forces acting on an object is called __________
a)
Parallelogram Rule
b)
Net Force
c)
Vector Quantity
d)
All the Jedi's using their abilities together
18.
If an object in mechanical equilibrium is stable, then it is without __________
a)
changes in motion
b)
rest or relaxation
c)
inconsistency
d)
the force being used by Darth Vadar
19.
Equilibrium means _________
a)
being at rest
b)
traveling at light speed
c)
balance
d)
pushing or pulling
20.
A vector means there is __________ and __________
a)
speed and velocity
b)
tension and weight
c)
balance and tauntness
d)
magnitude and direction
21.
Is known as a "stretching force"
a)
force
b)
vector
c)
Tension
d)
scalar
22.
What does this mean?
a)
sum of forces equals zero
b)
everyone forget physics
c)
Billy and Bob will be falling 140 ft and 110 ft respectfully
d)
Billy and Bob's effective faith in their balance is zero
23.
is a state wherein no physical changes occur; it is a state of steadiness.
a)
Force
b)
Support Force
c)
Mechanical Equilibrium
d)
Sum of forces equals 0
24.
What is the net force on a bathroom scale when a 110 lb person stands on it?
a)
110 lb is the supporting force
b)
100 N is the supporting force
c)
0 lbs, the scale is at rest. The scale reads the support force, not the net force.
d)
Fat
25.
For an object at rest on a horizontal surface, the __________  must equal the object's weight
a)
Net Force
b)
Support Force
c)
Force
d)
Equilibrium
26.
Static Equilibrium means ____
a)
Objects at rest
b)
moving objects
c)
that which is in outer space
d)
electrical balance
27.
Dynamic Equilibrium means ___________
a)
Objects at rest
b)
objects moving at constant speed in a straight-line path 
c)
force of friction
d)
flying in outer space
28.
A resultant is __________
a)
the sum of two or more vectors
b)
all the addition you did
c)
combination of forces together 
d)
what happens when two people get on a scale together
29.
The equation is also known as _______
a)
Parallelogram Rule
b)
Net Force
c)
Resultant
d)
Equilibrium Rule
30.
If the children are each 50 N, what must be the tension of one of the ropes?
a)
100N
b)
50 N
c)
100 lbs
d)
50 lbs
31.
What is the magnitude (size) and direction of the net force?
a)
15 N to the left
b)
15 N to the right
c)
1 N to the left
d)
1 N to the right
32.
What is the magnitude (size) and direction of the net force?
a)
14 N Down
b)
14 N Up
c)
6 N Up
d)
6 N Down
33.
What forces are acting on a book on a table? 
a)
upward force of table
b)
downward force of gravity
c)
both of these
d)
none of these
34.
When Nellie Newton hangs by a pair of vertical ropes, the tension in each rope will be...
a)
less than 1/2 her weght
b)
1/2 her weight
c)
more than 1/2 her weight
d)
equal to her weight
35.
When you push down on a spring it pushed back on your hand with...
a)
a smaller amout of force
b)
the same amount of force
c)
a greater amount of force
d)
not enough information to decide
36.
A possible explanation to a problem that has not yet been tested. 
a)
data
b)
theory
c)
hypothesis
d)
fact
37.
This part of the experiment serves as a basis of comparison; the one variable being tested has been omitted. 
a)
experimental group
b)
control group
c)
data
d)
variables
38.
Observations made during an experiment are called:
a)
data
b)
problems
c)
conclusions
d)
questions
39.
40 cm = ______ mm
( 1 cm = 10 mm)
a)
4000
b)
40
c)
400
d)
None of the Above
40.
18,000 g ____ 10 kg
(1 kg is 1000 g)
a)
<
b)
=
c)
>
41.
1 L = _______ mL
a)
1
b)
10
c)
100
d)
1000
42.
7,000 g = ____ kg
(1 kg = 1000 g
a)
70
b)
7000
c)
7
d)
0.07
43.

What is the correct SI unit for mass is the Kilogram, but in physics we often use which unit to represent weight?

a)

ounces

b)

newtons

c)

pounds

d)

grams

44.

The SI unit for time is the __?__.

a)

hours (h)

b)

liter (L)

c)

gram (g)

d)

second (s)

45.
The correct equation to calculate speed is
a)
distance/time
b)
time/distance
c)
distance x time
d)
distance/time2
46.
Shona cycles at an average speed of 8km/h. How far has she traveled if she cycles for 4 hours?
a)
55km
b)
32km
c)
43km
d)
32miles
47.
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
48.
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 
49.
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
50.
A car accelerates from 15 m/s to 60 m/s in 30 seconds.  What is its acceleration?
a)
2 m/s2
b)
3 m/s2
c)
1.5 m/s2
d)
0.75 m/s2
51.
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
52.
A drag racer accelerated from rest ( 0 m/s ) to 195 m/s in 6.5 s.  What was the acceleration?
a)
10 m/s
b)
30 m/s2
c)
-3 m/s2
d)
26 m/s
53.
A snail can move approximately 0.30 meters per minute. How many meters can the snail cover in 15 minutes?
a)
4.5 m
b)
50 m
c)
0.02 m
d)
14 m
54.
A ball rolls 144 cm in 12 sec. What is its speed in meters per second?
a)
12 cm/sec
b)
12 m/s
c)
1.2 m/s
d)
0.12 m/s
55.

Mark slams on the brakes after traveling 25 m/s. It takes him 3 seconds to come to a complete stop. What is his acceleration?

a)

8.33 m/s2

b)

-8.33 m/s2

c)

75 m/s2

d)

-75 m/s2

56.

How much time did it take Matthew to slow down to a complete stop, after traveling at 30 m/s. His acceleration is -12 m/s2

a)

2.5 s

b)

360 s

c)

.4 s

d)

-2.5 s

57.

In Newtonian physics, ________________ is any motion of a body where gravity is the only force acting upon it.

a)

kinematics

b)

free fall

c)

mechanics

d)

velocity

58.

A man drops his camera off of the top of the oil derrick tower at Six Flags. Which of the following kinematic equations would he use in order to calculate the speed the camera was travelling when it hit the ground?

a)
b)
c)
d)
59.

If an object is in free fall for three seconds, how fast will it be falling?

a)

10 m/s

b)

20 m/s

c)

30 m/s

d)

40 m/s

60.
What happens to the velocity of a ball as it is dropped off a cliff? 
a)
It decreases at a uniform rate 
b)
It increases at a uniform rate 
c)
It is constant 
d)
It increases at a non-uniform rate
61.

A pumpkin is dropped from a 35 m building. What is its initial velocity (vi)?

a)

10 m/s2

b)

35 m

c)

0 m/s

d)

10 m/s

62.
What is the formula for calculating speed?
a)
S= D x T
b)
S= T/D
c)
S= D/T
d)
S= D+T
63.

Pick all of the following that are velocities.

a)

4 km/s west

b)

5 cm/h south

c)

2 mph

d)

8 cm/year

e)

5 m/s up

64.
Calculate the speed of a train that traveled 400 miles in 5 hours.
a)
20 mph
b)
20 m/s
c)
80 mph
d)
80 m/s
65.

A plane flying 300 mph west toward California is an example of...

a)

Speed

b)

Velocity

c)

Acceleration

d)

Direction

66.

Choose every statement that is true of velocity.

a)

Velocity is speed only.

b)

Velocity is speed and direction.

c)

Velocity is a vector.

d)

Velocity has a direction.

67.

5.2 km/s west is an example of

a)

Speed

b)

Distance

c)

Time

d)

Direction

e)

Velocity

68.
mph is a unit for ... 
a)
Speed
b)
Distance
c)
Time
d)
Direction
69.

Calculate the speed of a sprinter who ran 200 meters in 20 seconds.

a)

10 m/s

b)

10 km/s

c)

10 m/hr

d)

10 km/hr

70.
A truck moving 20 m/s is an example of ...
a)
Speed
b)
Distance
c)
Velocity
d)
Acceleration
71.

George walked his dog 2 miles north in 30 minutes. What was George's speed per hour?

a)

15 mi/hr

b)

60 mi/hr

c)

0.067 mi/hr

d)

4 mi/hr

72.
Speed is
a)
the change in distance in a given time
b)
change in direction
c)
moving in a specific direction
d)
moving
73.

Velocity is...

a)

distance over time

b)

distance over time plus direction

c)

change in direction

d)

change in speed and direction

74.
Shona cycles at an average speed of 8km/h. How far has she traveled if she cycles for 4 hours?
a)
55km
b)
32km
c)
43km
d)
32miles
75.
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
76.

An arrow is shot upwards with an initial velocity of 50m/s, which of the following statements is false.

a)

After 3 seconds the arrow's speed will be 20m/s

b)

the arrow's acceleration increases each second it is traveling in the air.

c)

after 10 seconds the arrow will have returned to the same position as was prior to firing.

d)

the arrow's velocity is changing each with each passing second

77.

A rock and an elephant are dropped over a cliff, which of the following statements are true. Select all that apply

a)

Both the rock and the Elephant will accelerate toward the ground

b)

The elephant will experience a greater acceleration than rock

c)

The initial velocity of the elephant and the rock are equal in value to each other.

d)

The elephant being slightly chicken will accept his fate and understand that both him and the rock will continue to accelerate at a constant rate of 10m/s every second, until it smacks into the ground and creates a large crater from the impact and dies.

78.

An arrow is shot upwards with an initial velocity of 25m/s, which of the following statements are false. Select all that apply

a)

After 3 seconds the arrow's speed will be 20m/s

b)

the arrow's acceleration increases each second it is traveling in the air.

c)

after 2.5 seconds the arrow will have a velocity of 0m/s

d)

the arrow will travel for a total of 5 seconds before returning to its original position.

79.

What happens to the total distance that a ball travels as it falls off the side of a cliff?

a)

The distance remains constant

b)

The distance increases at a uniform rate

c)

The distance increases at a nonuniform rate

d)

The distance decreases at a uniform rate

80.
A ball is thrown in the air with an initial velocity of 40 m/s. How long does it take to reach back to the point it was thrown from?
a)
4 seconds 
b)
2 seconds 
c)
6 seconds 
d)
8 seconds 
81.
A ball is thrown up in the air with an initial velocity of 40 m/s. What is the ball's velocity after 2 seconds? 
a)
0 m/s 
b)
20 m/s traveling upward
c)
20 m/s traveling downward
d)
40 m/s traveling downward
82.
A ball is thrown up in the air with an initial velocity of 40 m/s. What is the ball's velocity after 6 seconds? 
a)
20 m/s traveling upward.
b)
10 m/s traveling downward.
c)
20 m/s traveling downward. 
d)
30 m/s traveling downward. 
83.

A ball is thrown upward with an initial speed of 30m/s. At what location will the ball be moving upward with a speed of 20m/s

a)

A

b)

B

c)

E

d)

F

84.

What is the distance a ball falls after 3, seconds (assume g is rounded to 10 m/s2)?

a)

30m

b)

45 m

c)

25 m

d)

90 m

85.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
86.
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
87.
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
88.
An object in motion will stay in what kind of motion as long as the net forces acting on it are zero?
a)
slowing motion in a straight line
b)
accelerating motion in a straight line
c)
constant motion in a straight line
d)
constant motion in an unpredictable direction
89.
What is the name for a push or pull?
a)
A movement
b)
A force
c)
Speed
d)
Density
90.
friction is a force that acts 
a)
in the same direction as the motion
b)
opposite to the direction of the motion
c)
opposite to the applied forces
d)
the same direction as the applied force
91.
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 
92.
After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals
a)
twice the force with which it was fired
b)
the same amount of force with which it was fired
c)
1/2 the force with which it was fired
d)
zero, since no force is requires to keep it moving. 
93.
What is inertia?
a)
the force that opposes motion
b)
the force of attraction between 2 objects
c)
an object's tendency to stay in motion or to stay at rest
d)
a change in an object's speed and/or direction
94.
According to Newton’s first law of motion, an object at rest that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
remain at rest
95.
Forces are needed to set objects in 
a)
speed
b)
motion
c)
velocity
d)
inertia 
96.
Without a force to stop or slow a coasting object, the object will coast forever in a ______ line. 
a)
blue
b)
red
c)
straight
d)
vertical 
97.
_________ opposes the motion of one object moving past another. 
a)
friction 
b)
velocity
c)
unbalanced forces
d)
simple machines 
98.
The force that pulls things toward earth.
a)
Speed
b)
Gravity
99.

Which of the following is the best example of Newton's First Law of Motion?

a)

Jessica's body flies forward after she hits the brakes

b)

Jessica drives a car

c)

Jessica is at a road crossing

d)

Jessica is sleeping

100.
If I slowly roll a ball down the hallway, why does it eventually stop?
a)
Because of Newton's First Law
b)
Friction and Air Resistance
c)
Inertia
d)
It wouldn't stop, it would keep going until it hits a wwall.
101.

Which of the following represent the relationships in Newton's 2nd Law of Motion? Choose two.

a)

F = m x a

b)

a = F/m

c)

F = m/a

d)

a = F x m

102.

Net force is in the same direction as the direction of motion for a

a)

constant velocity.

b)

0 or no acceleration.

c)

positive acceleration.

d)

negative acceleration.

103.

The net force direction and the direction of motion are opposites if the object is experiencing a

a)

constant velocity.

b)

0 or no acceleration.

c)

positive acceleration.

d)

negative acceleration.

104.

A 3000 kg bulldozer goes into a ditch and accelerates at -5 m/s/s. Determine the net force acting on the bulldozer.

a)

15,000 N

b)

-15,000 N

c)

-600 N

d)

600 N

105.

If you kick the Penn State mascot with a net force of 3000 N and your leg has a mass of 10 kg, what is the acceleration of your kick?

a)

300 m/s/s

b)

-300 m/s/s

c)

30,000 m/s/s

d)

-30,000 m/s/s

106.

Which would take the LEAST amount of net force to accelerate?

a)

A car accelerating at 4 m/s/s

b)

A car accelerating at 2 m/s/s

c)

A textbook accelerating at 4 m/s/s.

d)

A textbook accelerating at 2 m/s/s

107.

A 2 kg textbook accelerates at 8 m/s/s. What is the net force on the textbook?

a)

16 N

b)

4 N

c)

-16 N

d)

-4 N

108.

What are the units for acceleration, net force, and mass (in order)?

a)

m, Lbs, grams

b)

m/s, N, kg

c)

m/s/s, N, kg

d)

m/s/s, N, grams

109.

Forces come in pairs

a)

Newton's 1st law

b)

Newton's 2nd law

c)

Newton's 3rd law

d)

Law of conservation of momentum

110.

For every action, there is an equal and opposite reaction

a)

Newton's 1st law

b)

Newton's 2nd law

c)

Newton's 3rd law

d)

Law of conservation of momentum

111.

Newton’s law states that for every action, there is an ________ reaction.

a)

unequal and opposite

b)

equal and similar

c)

stronger and opposite

d)

equal and opposite

112.

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

a)

False

b)

True

113.

When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?

a)

The cannon moving forward

b)

The cannon moving backwards

c)

The cannonball moving backwards

d)

The cannonball moving forward

114.

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.

115.

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

116.

When the person pushes the ground with their foot, the equal and opposite reaction force is

a)

the ground pushing back on their foot

b)

when they start to move forward

117.

Force always come in________

a)

waves

b)

triplets

c)

pairs

118.
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
119.
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.
120.

What happens to the balloon if the air is released ?

a)

Balloon goes right

b)

Balloon goes up

c)

Balloon goes down

d)

Balloon goes left

121.

What is true of the velocity and acceleration of a tennis ball that is falling downward from its highest point?

a)

velocity is increasing, acceleration is upward

b)

velocity is downward, acceleration is upward

c)

velocity is downward, acceleration is downward

d)

impossible to tell because on the moon there is no gravity

122.

Melanie wants to read her favorite books, they are resting on the shelf. The Very Hungry Caterpillar has a mass of 1N and If Animals Kissed Goodnight has a mass of 0.5N which book will take less force to move?

a)

Caterpillar book, more mass =harder to accelerate

b)

Caterpillar book, more mass = easier to accelerate

c)

Animals Kiss, less mass easier to accelerate

d)

Animals Kiss, less mass = harder to accelerate

123.

An evil ewok threw a rock with a force of 24.6N and an acceleration of 6m/s2 at an innocent stormtrooper. What was the rocks mass?

a)

4Kg

b)

41kg

c)

4.1kg

d)

46kg

124.

Your car has a mass of 2500 kg and a force of 5000 N. How fast will it accelerate?

a)

20 m/s2

b)

2 m/s2

c)

0.5 m/s2

d)

120 N

125.

What happens when unbalanced forces act on an object at rest?

a)

the object remains at rest

b)

the object begins moving in an unpredictable direction

c)

the object begins moving in the direction of the net force

d)

the object begins moving opposite to the direction of net force

126.

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

127.

What is the net force?

a)

40 N left

b)

400 N right

c)

0 N Balanced

d)

40 N right

128.

Jenny applies a 60 N force to a 20 Kg cart, what is the acceleration of the cart if friction can be neglected?

a)

1200 m/s/s

b)

0.33 m/s/s

c)

20 m/s/s

d)

3 m/s/s

129.

The mass of a wagon is 40 kg. The wagon accelerates at 8 m/s2 . What force will be needed?

a)

38.25 Kg

b)

320N

c)

5N

d)

3.825Kg

130.

If an object was accelerating at 10 m/s2, and a force of 10 newtons was required to accelerate it, what was the object's mass?

a)

1kg

b)

10kg

c)

5kg

d)

2kg

131.
What is the net force for this situation?
a)
17 N Right
b)
17 N Left
c)
3 N Right
d)
3 N Left
132.

A force of 90N is applied to each cart below, which one will accelerate the fastest when a net force of 10N is applied?

a)

Cart 1

b)

Cart 2

c)

Cart 3

d)

Cart 4

133.

What is the NET FORCE of this diagram?

a)

17 N, right

b)

17 N, left

c)

23 N, right

d)

12 N, up

134.

If Melanie applies a 50 N force to a 25 Kg cart, if the cart starts at rest, how fast will it be moving in 5 seconds? (This is a hard one, two steps...)

a)

5m/s/s

b)

10m/s/s

c)

25m/s/s

d)

impossible to calculate based on the information provided.

135.

Newton's 2nd Law can be mathematically represented by which of the following formula(s)

a)

F=ma

b)

A= F/m

c)

m=F/a

136.
When a heavy football player and a light one run into each other, who exerts more force?
a)
The heavy one
b)
The light one
c)
They are equal
d)
there is no such thing as force
137.
When you hold an apple above your head, how many force pairs act on the apple?
a)
1
b)
2
c)
3
d)
4
138.
Suppose two carts, one twice as massive as the other, fly apart when the compressed spring that joins them is released.  How fast does the heavier cart roll compared with the lighter cart?
a)
twice as fast
b)
the same
c)
half as fast
139.
A bus hits a bug and the bug splatters on the windshield, which force is greater?
a)
The Bus
b)
The Bug
c)
They're the same
d)
Gravity acting on the bus
140.
Friction and gravity are both examples of a force.
a)
True
b)
False
141.
A science book with a mass of 2.8 kg is pushed along a table with a net force of 1 N. What is the book's acceleration?
a)
0.28 m/s2
b)
0.32 m/s2
c)
0.36 m/s2
d)
0.38 m/s2
142.
What does the 3rd Law cause guns to do? 
a)
Fire a bullet
b)
Make a sound
c)
Recoil after firing
d)
Load a magazine
143.
The measure of the pull of gravity on an object is ___________________.
a)
motion
b)
weight
c)
speed
d)
friction
144.
An astronaut has the same mass on earth as in space. 
a)
True
b)
False
145.
What can a force do?
a)
Change direction, speed, stop, and move an object
b)
Throw an object
c)
Use the force
d)
Change the mass & velocity
146.
If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first?
a)
the cannonball
b)
the baseball
c)
The balls land at the same time.
d)
the ball with the larger volume
147.

A ball is thrown upward with an initial speed of 30m/s. At what location will the ball have a velocity of zero?

a)

A

b)

D

c)

E

d)

G

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