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PSB Final Exam Review

Total questions: 83

Worksheet time: 1hrs 16mins

Name
Class
Date
1.

Why does a crumpled piece of paper land before a flat sheet of paper?

a)

Gravity exerts more force on the crumpled paper.

b)

There is more air resistance on the flat paper

c)

The crumpled paper is heavier

d)

The crumpled paper is lighter

2.

Which is NOT an action/reaction force pair?

a)

the forces between a bat and ball

b)

the force of gravity between a falling ball and Earth

c)

the force of propulsion and the force of gravity on an airplane

d)

the forces between a rabbit and the ground

3.

Why does a ball thrown level to the ground move downward?

a)

There is no force on the ball.

b)

A force pulls ball in the direction it is thrown.

c)

Gravity pulls ball toward the ground.

d)

Forces pull on the ball in both directions

4.

Air resistance causes the speed of a falling object to...

a)

increase.

b)

decrease.

c)

remain unchanged.

d)

become zero.

5.

A feather is in free fall when the force of gravity...

a)

is greater than the force of air resistance.

b)

is less than the force of air resistance.

c)

is equal to the force of air resistance.

d)

is the only force acting on it.

6.

A sled sliding on a flat, icy surface with a constant velocity is best described by...

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

7.

A rocket under constant force, whose acceleration increases as its mass decreases, illustrates...

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

8.
What is the total displacement of the object represented in this motion graph?
a)
0 meters
b)
20 meters
c)
30 meters
d)
60 meters
9.
What is the total distance of the object represented in this motion graph? 
a)
50 meters
b)
- 50 meters
c)
150 meters
d)
100 meters
10.
What is the total distance of the object represented in this motion graph?
a)
0 meters
b)
20 meters
c)
30 meters
d)
60 meters
11.
What is the total displacement of the object represented in this motion graph? 
a)
0 meters
b)
- 50 meters
c)
50 meters
d)
100 meters
12.
What is the total distance of the object represented in this motion graph?
a)
0 meters
b)
300 meters
c)
450 meters
d)
600 meters
13.
What is the total displacement of the object represented in this motion graph?
a)
0 meters
b)
300 meters
c)
450 meters
d)
600 meters
14.
Which of the following describes distance and displacement correctly?
a)
The blue arrow shows distance and the orange arrows show displacement
b)
The blue arrow shows displacement and the orange arrows show distance
c)
Both arrows show distance only
d)
Both arrows show distance and displacement
15.
Scott travels north 5 miles and then goes west 3 miles before coming straight back south 2 miles. What is his distance?
a)
10
b)
7
c)
8
d)
6
16.
 Jermaine runs exactly 2 laps around a 400 meter track. What is the displacement?
a)
800
b)
400
c)
0
d)
200
17.
Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's displacement?
a)
0 meters
b)
400 meters
c)
800 meters
d)
1600 meters
18.
Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's distance?
a)
0 meters
b)
400 meters
c)
800 meters
d)
1600 meters
19.

Distance divided by time is how you find

a)

speed

b)

velocity

c)

displacement

d)

motion

20.

Displacement is

a)

position of object

b)

final position minus initial position

c)

distance divided by time

d)

initial position plus final position

21.

What is the creature's final displacement?

a)

23 m

b)

9 m

c)

-9 m

d)

-23 m

22.

An astronaut travels at a speed of 400 m/s for 250 seconds, what is the total distance he traveled?

a)

0.625 m

b)

100,000 m

c)

1.6 m

d)

650 m

23.

How many gallons are in a pool that holds 758,000 Liters?

(1 gallon = 3.79 Liters)

a)

2.00 x 105 gallons

b)

200,000. gallons

c)

200,000 gallons

d)

2 gallons

24.
Gas costs $3.05 a gallon, and your car travels at 27 miles for each gallon of gas. How far can you travel in your car with $95 in your pocket?
a)
11 miles
b)
840 miles
c)
7800 miles
d)
870 miles
25.

0.4000 L to mL

a)

400

b)

40 mL

c)

400L

d)

400mL

26.

When the air is released from a balloon, the air moves in one direction, and the balloon moves in the opposite direction. Which law best explains the motion of the balloon?

a)

Newton's Law of Inertia (1st Law)

b)

Newton's Law of F=ma (2nd Law)

c)

Newton's Law of Force Pairs (3rd Law)

d)

Newton's Law of Biology

27.
A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?
a)
For every action there is an equal and opposite reaction.
b)
Every mass exerts a force on every other mass.
c)
An object at rest tends to stay at rest.
d)
Friction opposes the motion of an object.
28.

What is the definition of a force?

a)

Net force equal 0N and there is no change in the object's motion

b)

the overall force acting on an object after all forces are combined

c)

a push or a pull that acts on an object

d)

The force does not equal 0N, the object accelerates

29.

What is the definition of net force?

a)

a push or a pull that acts on an object

b)

Net force equal 0N and there is no change in the object's motion

c)

the overall force acting on an object after all the forces are combined

d)

The force does not equal 0N, the object accelerates

30.

What is the magnitude and direction of the force in the free body diagram shown?

a)

70 N right

b)

70 N left

c)

50 N right

d)

50 N left

31.

What do we call a force that causes an object to accelerate?

a)

net force

b)

moving force

c)

acceleration force

d)

unbalanced force

32.

What is the magnitude and direction of the force in the free body diagram shown?

a)

20 N, no change in motion

b)

20 N right

c)

20 N left

d)

0 N , no change in motion

33.

What is the magnitude and direction of the force in the free body diagram shown?

a)

5 N down

b)

0 N, no change in movement

c)

15 N up

d)

15 N down

34.

What is the magnitude and direction of the force in the free body diagram shown?

a)

35 N right

b)

17 N right

c)

11 N right

d)

5 N right

35.

Is the object in equillibrium?

a)

Yes

b)

No

c)

Not enough information

36.

Is the object in equillibrium?

a)

Yes

b)

No

c)

Not enough information

37.
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
38.

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

a)

20 m/s2

b)

0.5 m/s2

c)

2 m/s2

d)

120 N

39.

If an object was accelerating at 5 m/s2, and a force of 10 newtons was required to accelerate it, what was the object's mass?

a)

50 kg

b)

2 kg

c)

0.5 kg

d)

5 kg

40.

Two factors that determine work are

a)

force

b)

acceleration

c)

mass

d)

distance

e)

velocity

41.

units of force are

a)

newtons

b)

grams

c)

joules

d)

meters

42.

units for work are

a)

newtons

b)

joules

c)

meters

d)

seconds

43.

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

44.

At which point of the roller coaster is potential energy the greatest?

a)

W

b)

X

c)

Y

d)

Z

45.

A golf pro swings his driver with a mass of 0.75 kg at a velocity of 60 m/s. What is the kinetic energy of the club?

a)

22.5 J

b)

It doesn't have kinetic energy-it has potential energy.

c)

2,700 J

d)

1,350 J

46.

What is the mass of a ball has a kinetic energy of 450 J, what must it mass be if it is traveling through the air at 30 m/s?

a)

0.25 kg

b)

15 kg

c)

1 kg

d)

0.50 kg

47.

An 2 kg apple is hanging in a tree, 10 ft off the ground. What is the gravitational potential energy (gravity = 9.8 m/s2) of the apple?

a)

960.4 J

b)

98 J

c)

1920.8 J

d)

196 J

48.

What is a non renewable energy source.

a)

Solar Power

b)

Wind

c)

Natural Gas

d)

Tidal

49.

What is a renewable energy source.

a)

Coal

b)

Solar Power

c)

Nuclear Power

d)

Natural Gas

50.

It takes over millions of years for fossil fuels to form underground.

a)

True

b)

False

51.
Which of the following is a fossil fuel?
a)
Wind
b)
Coal
c)
Solar
d)
Biomass
52.

Select all the renewable energy sources.

a)

wind

b)

nuclear

c)

geothermal

d)

moving water

53.
This is energy from movement.
a)
mechanical energy
b)
light energy
c)
sound energy
d)
electrical energy
54.

If an object is sitting still in a position above the ground it has

a)

Kinetic energy

b)

Chemical potential Energy

c)

Gravitational potential energy

d)

Thermal energy

55.

What causes objects to change, move or do work?

a)

Chemicals

b)

Falling objects

c)

Heat

d)

Energy

56.

Another name for stored energy is

a)

kinetic energy

b)

potential energy

c)

light energy

d)

sound energy

57.

The picture shows what type of transformation

a)

Electrical to mechanical

b)

light to electric

c)

electrical to light

d)

light to light

58.

What type of energy transfer is showed in the image

a)

potential to kinetic

b)

electrical to potential

c)

electrical to heat

d)

heat to electrical

59.
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
60.
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
61.
A box sliding down an inclined plane attains a velocity of 27 m/s in 3 seconds from rest.  Find the acceleration.
a)
30 m/s
b)
24 m/s2
c)
9 m/s2
d)
81 km/hr
62.
A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity 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
63.
Which graph shows the object standing still?
a)
A
b)
B
c)
C
d)
D
64.

The graph represents the motion of a car over 10 seconds. What is the average speed of the car during the first 4 seconds?

a)

.4 m/s

b)

2.5 m/s

c)

10 m/s

d)

40 m/s

65.
 The graph shows Ashley riding her bike to Maria's house. 
What is occurring from point A to point B?
a)
they are traveling at a constant speed
b)
they are decreasing in speed
c)
they stopped to take a break
66.
The graph shows Ashley riding her bike to Maria's house. 
What was occurring from point B to point C?
a)
She was increasing her speed.
b)
She stopped for 4 minutes
c)
She was decreasing in speed
67.

What is the velocity at 12.5 seconds?

a)

0 m/s

b)

2 m/s

c)

10 m/s

d)

20 m/s

68.

What is the acceleration during interval A?

a)

0 m/s/s

b)

2 m/s/s

c)

10 m/s/s

d)

20 m/s/s

69.

What is happening between 2 and 3 seconds?

a)

The object is not moving.

b)

The object is not accelerating.

c)

The object is slowing down.

d)

The object is speeding up.

70.

What is happening between 3 seconds and 4 seconds?

a)

The object is moving in a negative direction.

b)

The object is returning to its starting position.

c)

The object is slowing to a stop.

d)

The object is changing direction.

71.

Describe the object’s motion.

a)

acceleration

b)

stopped

c)

Constant Speed

d)

Slowing Down

e)

Moving Backwards

72.

Describe the object’s motion.

a)

acceleration

b)

stopped

c)

Constant Speed

d)

Slowing Down

e)

Moving Backwards

73.

During which segment is the object moving at the slowest speed?

a)

A

b)

C

c)

D

74.

During which segment is the object moving at the fastest speed?

a)

A

b)

B

c)

C

d)

D

75.
You move a 12-newton box up a 6-meter ramp. In order to find out how much power you created, what would you need to know?
a)
The mass of the box
b)
The slope of the ramp 
c)
The direction the box moved
d)
How long the task took
76.
You do 90 joules of work in 30 seconds. How much power have you generated?
a)
30 watts
b)
3 watts
c)
120 watts
d)
270 watts
77.

Which of the following would produce the most power?

a)

A mass of 10 kilograms lifted 10 meters in 10 seconds

b)

A mass of 10 kilograms lifted 10 meters in 5 seconds

c)

A mass of 5 kilograms lifted 10 meters in 5 seconds

d)

A mass of 5 kilograms lifted 5 meters in 10 seconds

78.
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
79.
Find the force due to gravity if the mass of the object is 2300 kg and the mass of the other object is 4000 kg. The distance between the two objects is 0.150 m.
a)
0.00409 N
b)
244 N
c)
0.027 N
d)
6.14x10-4 N
80.
Find the force due to gravity if the mass of the object is 2300 kg and the mass of the other object is 4000 kg. The distance between the two objects is 0.150 m.
a)
0.00409 N
b)
244 N
c)
0.027 N
d)
6.14x10-4 N
81.

Find the distance between two objects if the mass of one object is 6.6 x 105 kg and the mass of the other object is 4.6 x 105 kg. The Force of gravity is 102 N

a)

5.36 x 10-9 m

b)

0.45 m

c)

0.20 m

d)

6.14 x 10-4 m

82.

What is the frictional force on a 25-N object sliding along a horizontal surface at constant speed if the coefficient of kinetic friction is 0.40?

a)

10 N

b)

25 N

c)

4.0 N

d)

8.0 N

83.

What is the normal force exerted by the ground on a 65-kg metal bar?

a)

65 N

b)

640 N

c)

-65 N

d)

-640 N

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