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CBA #3 Review

Total questions: 78

Worksheet time: 1hrs 6mins

Name
Class
Date
1.
Which Energy Transformation is shown in this image of a Hydroelectric Dam?
a)
Potential to Kinetic
b)
Chemical to Radiant
c)
Mechanical to Electrical
d)
Radiant to Electrical
2.
Which Energy Transformation is shown in this image of a battery powered Flashlight?
a)
Potential to Kinetic
b)
Chemical to Radiant
c)
Mechanical to Electrical
d)
Radiant to Electrical
3.
Which Energy Transformation is shown in this image of a roller coaster dropping?
a)
Potential to Kinetic
b)
Chemical to Radiant
c)
Mechanical to Electrical
d)
Radiant to Electrical
4.
Which Energy Transformation is shown in this image of a solar panel?
a)
Potential to Kinetic
b)
Chemical to Radiant
c)
Mechanical to Electrical
d)
Radiant to Electrical
5.
What is shown in this graph?
a)
Constant Speed
b)
No movement
c)
Change in speed
6.
What is shown in this graph?
a)
Constant Speed
b)
No movement
c)
Change in speed
7.
Calculate the average speed of the object in the graph.
a)
0.5 m/s
b)
2 m/s
c)
5 /ms
8.
Which rock has the higher Gravitational Potential Energy?
a)
Rock on the ground
b)
Rock on the cliff
9.
Which point does the ball have the highest Kinetic Energy?
a)
Top
b)
Middle
c)
Bottom
10.
which point has the most potential energy
a)
G
b)
f
c)
b
d)
a
11.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
12.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
13.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
14.
What kind of energy is in a moving skateboard?
a)
Potential
b)
Kinetic
15.
What kind of energy is in a person climbing a ladder?
a)
Potential
b)
Kinetic
c)
Both
16.
What kind of energy is in a stretched rubber band?
a)
Potential
b)
Kinetic
17.
Which runner stopped for a rest?
a)
Albert
b)
Bob
c)
Charlie
18.
Which information is needed to  determine  how fast a  truck  is traveling? 
a)
direction and  mass  
b)
distance  and time 
c)
size and  speed 
d)
time  and  weight  
19.
A unusually fast zombie was chasing after Carl to eat him. What was the zombie’s speed at 6 seconds if he traveled 36 meters?
a)
6 meters/seconds
b)
6 seconds/meters
c)
.17 meters/second
d)
None of the above
20.
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
21.
Allen travels 100 km in 5hrs. Find his average speed in km/h
a)
5km/hr
b)
10km/hr
c)
50km/hr
d)
20km/hr
22.
A worm traveled 50 centimeters in 5 minutes.  What is the average speed of the snail?
a)
10 cm/m
b)
25 cm/m
c)
250 cm/m
d)
1 cm/m
23.
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
24.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
25.
Total distance divided by total time is
a)
average speed
b)
constant speed
c)
instantaneous speed
d)
acceleration
26.
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
27.
Shona cycles at an average speed of 8km/h. How far has she travelled if she cycles for 4 hours?
a)
55km
b)
32km
c)
43km
d)
32miles
28.
Kelly runs from 4:50pm until 5:20pm at an average speed of 7km/h. How far did she go?
a)
4.5km
b)
2.5km
c)
3.5km
d)
14km
29.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
30.
What is happening at D?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
31.
What would the d-t graph look like for an object travelling at a constant velocity? 
a)
Horizontal line
b)
Straight line
c)
Curved line
32.
when did the object stayed still?
a)
first 10 seconds
b)
first 20 seconds
c)
20th ~30th seconds
d)
30th~40th seconds
33.
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 
34.
What is the name for a push or pull?
a)
A movement
b)
A force
c)
Speed
d)
Density
35.
What Unit do we Measure Force in? 
a)
Newtons
b)
Joules
c)
Force
d)
Don't know
36.
What is the formula for force?
a)
F=M/A
b)
F=MA
c)
F=AX
d)
what is force?
37.
The force that causes a ball to fall to the ground is ____________________________
a)
gravity
b)
lubricant
c)
friction
d)
motion
38.
Accelerations are produced by
a)
forces.
b)
 velocities.
c)
 accelerations.
d)
 masses.
39.
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
40.
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
41.
On which surface would friction be the greatest?
a)
carpet
b)
ice
c)
snow
d)
satin
42.
What is the resistance of an object to change in its motion?
a)
weight
b)
inertia
c)
gravity
d)
friction
43.
According to Newton's third law, when one object exerts a force on a second object, what happens?
a)
The second object exerts an equal force on the first object, in the opposite direction.
b)
The second object exerts a smaller force on the first object, in the opposite direction
c)
The second object exerts an equal force on a third object, in the same direction
d)
The second object accelerates in the direction of force applied.
44.
If you pushed 2 objects of different mass with the same force, which will accelerate more?
a)
The object with less mass
b)
The object with more mass
c)
they will accelerate the same
d)
neither will move
45.
For the same force, how does reducing the mass of an object affect its acceleration?
a)
it decreases it
b)
it does nothing
c)
it increases it
d)
the mass cannot be changed
46.
An object is moving at a constant velocity. What can you say about the forces on it?
a)
They are unbalanced
b)
They are balanced
c)
They are all acting in the same direction
d)
There cannot be any forces on it
47.
A unbalanced force means that an object is 
a)
zero net force
b)
motion of an object
c)
sitting still
d)
object at rest
48.
Which of Newtons laws explains why football teams have big, large, fast athletes.
a)
Frist and second
b)
second law
c)
first law
d)
Third law
49.
Which law explains why when you put a book on a table the table pushes on the book
a)
3rd law
b)
4th law
c)
1st law
d)
2nd law
50.
What is Newton's Third Law?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
51.

Which of the following DOES NOT represent a change in velocity?

a)

A person riding a motorcycle at 30 mi/hwest and decreasing speed to 25 mi/h west.

b)

A balloon is floating up into the air at 3 m/s. It then pops and starts falling to the ground.

c)

A train is traveling south at 120 km/h.

d)

A person is jogging east at 6 mi/h and then turns north.

52.

The diagram shows what happens to the passenger on a train after it comes to a stop. What direction would the passenger move if the train were to move forward at a fast speed?

a)

backward

b)

sideways

c)

forward

d)

no motion

53.

A student slides a book across a desk by giving it an initial push. Which of the following is the MOST important reason that the book eventually comes to a stop instead of continuing to slide?

a)

The initial force was too weak to keep the book in motion.

b)

The mass of the book was not enough to keep the book in motion.

c)

The force that occurs when the book rubs against the desk stops the book.

d)

The magnetic force from the Earth stops the book.

54.

What was the average speed of the bus during the first 5 hours it was moving?

a)

200 km/h

b)

150 km/h

c)

50 km/h

d)

40 km/h

55.

Which force would cause the box to move to the right?

a)

0 N

b)

13 N

c)

17 N

d)

23 N

56.

Which graph best illustrates something moving at a constant speed?

a)

Graph 1

b)

Graph 2

c)

Graph 3

d)

Graph 4

57.

A girl is pushing a cart with a force of 6N. Her sister is also pushing on the same cart, in the same direction, with a force of 4N. What is the net force acting on the cart?

a)

2N

b)

4N

c)

6N

d)

10N

58.

The car is parked facing west. A second car traveling at a high velocity from the north strikes the car. The force of the second car striking the first will -

a)

have no effect on the parked car.

b)

cause the parked car to move toward the north.

c)

cause the parked car to move toward the south.

d)

cause the moving car to continue traveling south, but at a higher speed.

59.

How are speed and velocity different?

a)

Speed includes direction.

b)

Speed indicates momentum.

c)

Velocity includes momemtum.

d)

Velocity includes direction.

60.

Two main outside forces acting on most anything on Earth are -

a)

friction and volume.

b)

friction and gravity.

c)

gravity and density.

d)

gravity and mass.

61.

The kids on the right are exerting 240 N of force to the left. The kids on the left are exerting a force of 255 N to the right. How large, and in what direction, is the net force acting on the rope?

a)

495 N to the right

b)

495 N to the left

c)

15 N to the right

d)

15 N to the left

62.

The image shows the forces acting on an object. In which direction will the object move?

a)

Upward and to the right

b)

Upward and to the left

c)

Downward and to the right

d)

Downward and to the left.

63.

According to Newton's 1st Law of Motion, what would happen to an arrow flying through the air if no unbalanced for acted on it?

a)

It would continue in the same direction with the same speed.

b)

It would continue in the same direction, but slow down.

c)

It would continue in the same direction, but speed up.

d)

It would continue at the same speed, but change direction.

64.

The image shows a basketball, baseball, bowling ball, and plastic ball. If you applied the same force to each ball, which choice lists the objects from GREATEST inertia to LEAST inertia?

a)

plastic ball, baseball, basketball, bowling ball

b)

plastic ball, bowling ball, basketball, baseball

c)

bowling ball, basketball, baseball, plastic ball

d)

bowling ball, baseball, plastic ball, basketball

65.

A frisbee is flying through the air. Balanced forces act on it. What happens to the frisbee?

a)

It slows down

b)

It speeds up

c)

Nothing, as balanced forces do not cause a change in motion.

d)

Nothing, as unbalanced forces do not cause a change in motion.

66.

According to Newton's 2nd Law of Motion, how would increasing the mass of an object affect the amount of force need to accelerate it at a given rate?

a)

The same amount of force could be used to accelerate an object of greater mass.

b)

The object of greater mass cannot be moved.

c)

Less force will be needed to accelerate the object having a greater mass.

d)

More force is needed to accelerate the object having a greater mass.

67.

Which of the following best describes the velocity of an object?

a)

30 m/s

b)

30 m east

c)

30 m/s east

d)

30 m/s2

68.

A coin is placed on a card on top of a glass. The card is quickly pushed away and the coin falls into the glass. Which statement below explains this result?

a)

Force is equal to mass times acceleration.

b)

A body in motion tends to stay in motion or a body at rest tends to stay at rest unless acted on by an outside force.

c)

Momentum equals mass times velocity

d)

For every action there is an equal and opposite reaction.

69.

A roller coaster containing four cars is accelerating at 15 m/s2 east before it comes to an abrupt stop at the end of the ride. The mass of cars is 1,000 kg. How much force was exerted on the roller coaster to bring it to a stop?

a)

15,000 kg

b)

15,000 m/s2

c)

15,000 N

d)

15,000 m/s east

70.

The table shows data that describes the motion of an object moving at a constant speed. What was the average speed of this object during the first 5 seconds it was moving?

a)

5 m/s

b)

7 m/s

c)

21 m/s

d)

28 m/s

71.

If this object's motion remains unchanged, how far will it travel in 3 hours?

a)

60 miles

b)

80 miles

c)

100 miles

d)

120 miles

72.

Which of Newton's Laws does this image best represent?

a)

1st - Law of Inertia

b)

2nd - F = m X a

c)

3rd - action/reaction force pairs

73.

David rode 35 miles in 7 hours. What was his average speed?

a)

35 mi/h

b)

7 mi/h

c)

10 mi/h

d)

5 mi/h

74.

This image is accurate.

a)

True

b)

False

75.

What is required to cause an object to start moving?

a)

A large force

b)

Low amount of friction

c)

A small mass

d)

Unbalanced forces

76.

According to Newton's 1st Law, what will cause something to change its motion (or lack of motion)?

a)

Inertia

b)

Gravity

c)

Balanced forces

d)

Unbalanced forces

77.

What is the standard unit for force (f = m X a)?

a)

m/s

b)

pounds

c)

kg x m/s2

d)

Newtons

78.

What is the net force and direction of movement (if any)?

a)

4 N to the left

b)

9 N to the right

c)

0 N - no movement (balanced forces)

d)

4 N to the right

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