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Physics Fall Final Exam Review

Total questions: 92

Worksheet time: 2hrs 26mins

Name
Class
Date
1.
The speed of the object is changing during interval:
a)
A-B
b)
B-C
c)
C-D
d)
D-E
2.

What is happening in this graph from point B to C?

a)

The object is going down a hill.

b)

The object is returning to its starting location.

c)

The object is slowing down.

d)

The object is staying still.

3.
On a distance vs. time graph, the steeper the slope _____
a)
the slower the speed
b)
the faster the speed
c)
less acceleration
d)
greater acceleration
4.

from 3rd second to 5th second, the object is

a)

moving at a constant speed

b)

speeding up

c)

not moving

d)

slowing down

5.
Which graph represents the greatest acceleration?
a)
A
b)
B
c)
C
d)
D
6.

What acceleration does this object have from 1 s to 4 s?

a)

3 m/s2

b)

15 m/s

c)

5 m/s2

d)

4 m/s2

7.

During which time interval is this object moving forward?

a)

0 s to 4 s

b)

1 s to 6 s

c)

1 s to 4 s

d)

4 s to 6 s

8.

Which chart is correct for the problem: "A car accelerates from 20 m/s to a stop in 4 seconds. Determine acceleration?"

a)

A

b)

B

c)

C

d)

D

9.

"A police officer slams on his brake pedal." Which of the 4 vector pairs would be the most appropriate to match this scenario?

a)

1

b)

2

c)

3

d)

4

10.

The dot diagram represents the motion of a rightward-moving truck. What is the direction of the truck's acceleration?

a)

Right

b)

Left

c)

The truck is not accelerating

d)

Can not be deduced from the given information

11.

which of the following is a vector?

a)

velocity

b)

discance

c)

position

d)

speed

12.

How do scalars and vectors differ?

a)

scalers have units

b)

scalers have direction

c)

vectors have units

d)

vectors have direction

13.
Distance and direction of an object's change in position from a starting point
a)
displacement
b)
distance
c)
motion
d)
reference point
14.

Select the scalars:

a)

time

b)

velocity

c)

speed

d)

acceleration

e)

distance

15.
What is a magnitude?
a)
A numeric value.
b)
A direction.
16.
Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?
a)
the feather
b)
the metal bolt
c)
They would hit the ground at the same time.
d)
They would be suspended in a vacuum.
17.
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
18.

A textbook is dropped from a second floor window and falls to the ground. What happens to the acceleration as the book falls to the ground

a)

the acceleration increases

b)

the acceleration decreases

c)

the acceleration remains constant

19.
Two objects - one with mass m and the other with mass 2m - are released from rest at the same height. Which object hits the ground first?
a)
mass m
b)
mass 2m
c)
both objects hit the ground at the same time
d)
unable to determine with information given
20.

You want to conduct an investigation to determine the average speed of a boat. Which of the following measurements would you need to take in order to be able to calculate the speed?

a)

mass and time

b)

mass and acceleration

c)

distance traveled and time

d)

distance traveled and mass

21.
What does the Law of Conservation of Energy state?
a)
Energy cannot be created or destroyed
b)
Nothing can exchange energy
c)
Energy will increase over time.
d)
Energy will decrease over time.
22.

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

23.

Energy that is stored in a system, ready to be used, is called ____________ energy.

a)

Kinetic

b)

Potential

c)

Conserved

d)

Power

24.

Energy in a system that is moving is called _______________ energy.

a)

Kinetic

b)

Potential

c)

Mechanical

d)

Power

25.

How much kinetic energy (K) does a baseball with a mass of 0.143 kg have if it is travelling at a velocity of 41.1 m/s?

HINT: K = 1/2mv2

a)

120.8 joules

b)

89.7 joules

c)

108.3 joules

d)

156.6 joules

26.

The sum of the kinetic and potential energy in a system is known as the system's _____________________ energy.

a)

mechanical

b)

chemical

c)

thermal

d)

combined

27.

A 1.0 kg ball is stationary at the top of a hill that is 10.0 meters in height. The ball rolls all the way down the hill. What is its gravitational potential energy at the bottom of the hill?

a)

0 joules

b)

98 joules

c)

49 joules

d)

38 joules

28.

This drawing illustrates which of the following?

a)

Conservation of Mechanical Energy

b)

Conservation of Mass

c)

Conservation of Momentum

d)

Conservation of Matter

29.

At which point in the picture must the cart have the most MECHANICAL energy?

a)

Point 1

b)

Point 2

c)

Point 3

d)

They would all be the same

30.

A cliff diver with a mass of 125 kg jumps off a 50m high cliff, how fast will he be traveling just before he hits the water? (His height at this point is 0m)

(HINT: Find PE first.) KE = 1/2mv2

g = 9.8 m/s2

a)

61,250 m/s

b)

980 m/s

c)

31.3 m/s

d)

247.5 m/s

31.

A cliff diver with a mass of 125 kg jumps off a high cliff, at a height of 10m he is moving at 15.5 m/s. What is his MECHANICAL energy.

(HINT: ME = KE + PE)

g = 9.8 m/s2

a)

15,015.6 J

b)

12,250 J

c)

27,265.6

d)

2,765.6

32.

if you push a cart with a force of 60 N for 2 m... how much work have you done

a)

120 J

b)

30 J

c)

120 N

d)

30 N

33.
work transfers
a)
sweat
b)
energy
c)
velocity
d)
effort
34.
In order for Work to happen, what 2 things must occur?
a)
Mass and Displacement
b)
Force and Mass
c)
Force and Work
d)
Force and displacement
35.
What is work?
a)
A push or pull.
b)
When the object moves in the same direction in which the force is exerted.
c)
A change in energy.
d)
The rate at which energy is transferred.
36.
While playing pool, the white cue ball strikes the 8 ball. Before the collision, the cue ball's velocity was 10 m/s and the 8 ball was at rest. If both ball's have a mass of 0.15 kg and the cue ball's velocity after the collision is 2 m/s, what is the 8 ball's velocity?
a)
2 m/s
b)
8 m/s
c)
-2 m/s
d)
1.5 m/s
37.
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
38.

The Law of Conservation of Momentum states:

a)

The total momentum before a collision is equal to the total momentum after a collision.

b)

The total momentum before a collision is greater than the total momentum after a collision.

c)

The total momentum before a collision is less than the total momentum after a collision.

d)

The total momentum before a collision is not related to the total momentum after a collision.

39.

If two objects collide or explode, they experience

a)

the same force for the same amount of time.

b)

different forces for the same amount of time.

c)

different forces for different amounts of time.

d)

the same force for different amounts of time.

40.
The definition of momentum is
a)
Mass in Motion
b)
The size of an object
c)
The velocity of an object
d)
A comparison between two objects
41.
When the speed of an object is doubled, its momentum
a)
remains unchanged in accord with the conservation of momentum.
b)
doubles
c)
quadruples
d)
decreases
42.
Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?
a)
car
b)
bike
c)
they are equal
d)
cannot determine using the info provided
43.

A 5 N force is applied to a 3 kg ball to change its velocity from 9 m/s to 3 m/s. What is the impulse on the ball?

a)

-2.5 N⋅s

b)

-10 N⋅s

c)

-18 N⋅s

d)

-45 N⋅s

44.

A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s. Calculate the impulse on the ball.

a)

1 N⋅s

b)

6 N⋅s

c)

33.3 N⋅s

45.

If you push an object with a force of 10 N for 5 seconds , you will change it’s momentum by:

a)

2 N s

b)

50 n s

c)

2 N/s

d)

50 N/s

46.
The impulse is ______ the change in momentum
a)
greater than
b)
equal to
c)
less than
d)
always double
47.
The difference between a car hitting a wall vs. a car hitting a hay stack is
a)
the Impulse on the car hitting the wall is greater
b)
the change in momentum of the car hitting the wall is greater
c)
the force on the car hitting the hay stack is greater
d)
the collision time of the car hitting the hay stack is greater
48.

If a big truck is driving down the highway and runs into an insect, which of these is true?

a)

The truck applies more force to the insect than the insect applies to the truck.

b)

The insect's momentum changes more than the truck's.

c)

The insect accelerates more than the truck.

d)

The insect applies a greater impulse to the truck than the truck applies to the insect.

49.

A very light ping-pong ball moving east at a speed of 4 m/s collides with a very heavy stationary bowling ball. The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the east. Which object experiences the greater magnitude impulse during the collision?

a)

Neither, both experienced the same magnitude impulse.

b)

The Ping-Pong ball

c)

The bowling ball

50.

What is the resultant vector of the two labeled vectors?

a)

+2 km

b)

+14 km

c)

-2 km

d)

-14 km

51.

What is the magnitude of the resultant vector, r?

a)

3

b)

4

c)

5

d)

7

52.

What is the resultant of the two vectors shown above?

a)

+5

b)

-5

c)

+15

d)

-15

53.
What is the vertical acceleration of a projectile?
a)
0 m/s2
b)
-9.81 m/s2
54.
If you throw a baseball straight up, what is its acceleration at the highest point?
a)
-9.8 m/s2
b)
-9.8 m/s
c)
0 m/s2
d)
0 m/s
55.
What is the horizontal acceleration of a projectile?
a)
0 m/s2
b)
9.8 m/s2
56.
Which angle will produce the greatest range (in the absence of air resistance)?
a)
0 degrees
b)
45 degrees
c)
90 degrees
d)
none of these
57.
Which angle will produce the greatest height (in the absence of air resistance)?
a)
0 degrees
b)
45 degrees
c)
90 degrees
d)
none of these
58.
If a bullet is horizontally shot at the same moment another bullet is dropped from the same height, which will hit the ground first?
a)
Shot Bullet
b)
Dropped Bullet
c)
Hit at Same Time
59.

At what point is vy= 0 m/s?

a)

A

b)

B

c)

C

d)

D

e)

None of these points

60.

At what point is vx= 0 m/s?

a)

A

b)

B

c)

C

d)

D

e)

None of these points

61.

A package is dropped from an airplane, where will the package hit the ground?

a)

A

b)

B

c)

C

62.

A student draws velocity vectors on a football after being punted. As the football rises, the vertical velocity arrows

a)

become shorter

b)

become longer

c)

stay the same length

d)

point down

63.

A student draws velocity vectors on a football after being punted. As the football rises, the horizontal velocity arrows

a)

become shorter

b)

become longer

c)

stay the same length

d)

point down

64.

Who do you agree with?

a)

Anita: “A projectile’s vx changes because of gravity, and its vy remains constant.”

b)

Barry: “Both vx and vy are constant.”

c)

Chris: “A projectile has no acceleration in the vertical dimension but it does accelerate horizontally.”

d)

Dave: “A projectile has vertical acceleration and a constant horizontal velocity”

65.
An object in motion tends to stay in motion unless an ___ force acts on it.
a)
unbalanced
b)
balanced
66.
The tendency of an object to resist a change in motion is...
a)
inertia
b)
kinetic energy
c)
vector
d)
net force
67.
Objects with greater _________ also have greater inertia.
a)
speed
b)
mass
c)
temperature
d)
friction
68.
An object following a straight-line path at a constant speed 
a)
has zero acceleration
b)
has no forces acting on it
c)
has a net force acting in the direction of motion
d)
none of these
69.
One object has twice as much mass as another object. The first object also has also twice as much...
a)
velocity
b)
gracitational acceleration
c)
inertia
d)
all of these
70.
Accelerations are produced by
a)
forces.
b)
 velocities.
c)
 accelerations.
d)
 masses.
71.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
72.
How much force is needed to accelerate a 2 kg physics book to an acceleration of 6 m/s/s?
a)
36 N
b)
12 N
c)
3 N
d)
0.33 N
73.

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/s2

b)

0.33 m/s2

c)

20 m/s2

d)

3 m/s2

74.
An archer shoots an arrow. The action force is the bowstring against the arrow, the reaction force is...
a)
Air resistance against the bow
b)
the arrow's push against the bowstring
c)
the grip of the archer's hand on the bow
75.
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
76.

A person is attracted towards the center of Earth by a 440N gravitational force. The force with which Earth is attracted toward the person is

a)

More than 440N

b)

Less than 440N.

c)

The same, 440N.

77.

An unfortunate bug splatters against the windshield of a moving car. Compared to the force of the car on the bug, the force of the bug on the car is

a)

larger.

b)

the same.

c)

smaller

d)

need more information to say.

78.

What is the NET FORCE of this diagram?

a)

17 N, right

b)

17 N, left

c)

23 N, right

d)

12 N, up

79.

Which of the following is true about this free-body diagram?

a)

the forces are are balanced

b)

the object is free-falling

c)

the object is moving upward

d)

the forces are unbalanced

80.
Name the missing force....
a)
weight force
b)
normal force
c)
frictional force
d)
tension force
81.

A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?

a)
b)
c)
d)
82.

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

a)
b)
c)
d)
83.
What is the SI unit used to measure force? 
a)
pounds 
b)
grams 
c)
newtons 
d)
friction
84.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
85.

What is the mass and weight of a 15 kg object?

a)

mass: 15 kg; weight: 15 kg

b)

mass: 147 kg; weight: 15 kg

c)

mass: 9.81 kg; weight: 147 N

d)

mass: 15 kg; weight: 147 N

86.
An object weighs 340 N.  What is its mass?
a)
340 kg
b)
340 N
c)
34 kg
d)
34 N
87.
If an object's mass =30 Kg on the Earth, what would be it's weight on Earth?
a)
3 kg
b)
300 kg
c)
3 N
d)
300 N
88.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
89.
The amount of friction depends on the weight of the objects pressing together.
a)
True
b)
False
90.
Sally experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
91.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
92.
 What is the unit called that measures force?
a)
weight
b)
meter
c)
Newton
d)
kilogram

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