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Physics

Total questions: 139

Worksheet time: 12hrs 35mins

Name
Class
Date
1.

name one type of collision::

a)

inertia

b)

elastic

c)

plastic

2.

what is inelastic collision?

a)

conserved energy

b)

energy is not conserved

3.

what is an example of elastic collision?

a)

nail in wood

b)

basketball hitting ground

4.

example of inelastic collision:

a)

baseball hitting a ball

b)

jumping in water

c)

a bullet hitting wood

5.

what is the formula for momentum?

a)

p=vm

b)

p=mv

c)

i=mv

6.

momentum can be transferred from one object to another

a)

true

b)

false

7.

when objects collide some momentum is lost:

a)

false

b)

true

8.

a tiny bullet can have more momentum than a huge truck:

a)

false

b)

true

9.

solve for momentum! .004kg and 600m/s

a)

2.0

b)

2.4

10.

solve for momentum! .14kg and 30m/s

a)

4.2

b)

4.8

11.

solve for momentum! 3,000kg and 8,000m/s

a)

23,000,000

b)

24,000,000

12.

what is the formula for impulse?

a)

F=IT

b)

I=FT

13.

A FOOTBALL PLAYER KICKS THE BALL WITH A FORCE OF 50N. FIND THE IMPULSE ON THE BALL IF HIS FOOT STAYS IN CONTACT WITH THE FOOTBALL FOR 0.01S

a)

0.4N

b)

0.5N

14.

A FOOTBALL PLAYER KICKS THE BALL WITH A FORCE OF 40N. FIND THE IMPULSE ON THE BALL IF HIS FOOT STAYS IN CONTACT WITH THE FOOTBALL FOR 0.02S

a)

0.8S

b)

0.9

15.

A FOOTBALL PLAYER KICKS THE BALL WITH A FORCE OF 150N. FIND THE IMPULSE ON THE BALL IF HIS FOOT STAYS IN CONTACT WITH THE FOOTBALL FOR 0.023S

a)

4S

b)

3S

16.

A FOOTBALL PLAYER KICKS THE BALL WITH A FORCE OF 190N. FIND THE IMPULSE ON THE BALL IF HIS FOOT STAYS IN CONTACT WITH THE FOOTBALL FOR 0.28S

a)

52S

b)

53S

17.

FOR EVERY REACTION THERE IS AN OPPOSITE OR EQUAL REACTION:::

a)

1ST LAW

b)

3RD LAW

18.
True or false: Heat moves from the cooler object to a warmer object
a)
True
b)
False
19.
If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________
a)
one reaches a temperature of zero
b)
they both have an equal temperature
c)
one runs out of energy
20.
All atoms are vibrating, hot atoms have more energy. When hot atoms bump into cold atoms they transfer energy.
a)
True
b)
False
21.
Heat always transfers from hot to cold. 
a)
True
b)
False
22.
The transfer of thermal energy between objects of different temperatures is called...
a)
temperature
b)
heat
c)
internal energy
d)
none of these
23.
True/False: when two substances reach the same temperature they are in thermal equilibrium.
a)
True
b)
False
24.
Temperature is a measure of the...
a)
total energy in a substance
b)
total kinetic energy in a substance
c)
average potential energy in a substance
d)
average kinetic energy of molecules in a substance
25.
Freezing occurs when matter changes from a...
a)
gas to a solid
b)
solid to a gas
c)
liquid to a gas
d)
liquid to a solid
26.
High temperature is connected to:
a)
Low kinetic energy.
b)
High kinetic energy.
c)
Zero net energy.
d)
Equal kinetic energies.
27.
What letter represents heat?
a)
S
b)
C
c)
T
d)
Q
28.
What is 0oC in Kelvin?
a)
110 K
b)
100 K
c)
273 K
d)
210 K
29.
How much heat is absorbed when 355g of water goes from 25-45 degrees Celsius? The specific heat of water is 4180 J/kg.K 
a)
21945 J
b)
21945 g
c)
29678 J
d)
29678 g
30.
A 300g piece of aluminum at 100 oC is placed in a 150g of H2O at 200 oC. The final temp. of the mix is 35 oC. What is the specific heat of the aluminum if the specific heat of the water is 4180 J/kgK?
a)
22415 J
b)
22415 g
c)
32415 J
d)
32415 g
31.
Which cools at a faster rate, a pot of boiling water left at room temperature or a same-sized pot of warm water left at room temperature?
a)
boiling water
b)
warm water
c)
both cool at an equal rate
32.
Polystyrene is a good heat...
a)
emitter
b)
absorber
c)
conductor
d)
insulator
33.
Which has the higher specific heat capacity, water or sand?
a)
water
b)
sand
c)
they are both equal
34.
To convert from Celsius to Kelvin:
 
K = Degrees Celsius + __________  
a)
251 K
b)
275 K
c)
213 K
d)
273 K
35.
12 kilograms = ___ grams
a)
1000
b)
12000
c)
12
d)
120
36.
The following number in scientific notation is
 0.0005621 = _____
a)
5.621 x 104
b)
5.621 x 10-5
c)
5.621 x 10-4
d)
56.21 x 102
37.

You do work when you mannequin pose with an object in your hand.

a)

True

b)

False

38.

Two factors that determine work are...

a)

Force

b)

Mass

c)

Velocity

d)

Distance

39.

Units of force are...

a)

Newtons

b)

Grams

c)

Joules

d)

Meters

40.

Units of work are...

a)

Newtons

b)

Grams

c)

Joules

d)

Meters

41.

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

42.

What is the formula for work?

a)

Force = work × distance

b)

Distance = force × work

c)

Work = force × distance

d)

Work = force × mass

43.

Fred kicks a ball with a force of 20N to George, who is 5M away.


How much work was done to the ball?

a)

25 J

b)

100 J

c)

4 J

d)

75 J

44.

If 40N of force is applied to Rollo Koster's 10 kg cart over a distance of 50 meters, how much work is done?

a)

8000 J

b)

8000 N

c)

4000 J

d)

2000 J

45.

If the mystery machine moves 100 meters how much work is done?

a)

130,000,000 J

b)

70,000 J

c)

100,000 J

d)

30,000 J

46.

If Jay Loppy pushes his van 20 meters how much work is done?

a)

2,000 J

b)

40,000 J

c)

10,000 J

d)

800,000 J

47.
a)

A

b)

B

c)

C

d)

D

48.
a)

A

b)

B

c)

C

d)

D

49.
a)

A

b)

B

c)

C

d)

D

50.
a)

A

b)

B

c)

C

d)

D

51.
a)

A

b)

B

c)

C

d)

D

52.
a)

A

b)

B

c)

C

d)

D

53.
a)

A

b)

B

c)

C

d)

D

54.

Which of Newton's laws of motion does the image best represent?

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

d)

Newton's 4th Law

55.

The graph shows an object that is _____________.

a)

In motion

b)

At rest

c)

Accelerating

d)

Decelerating

56.

Which ball has more inertia?

a)

300kg

b)

30kg

57.

Choose the best definition for the word "speed".

a)

The distance traveled by an object.

b)

The time that has passed as an object travels.

c)

The distance traveled by an object in given amount of space.

d)

The distance traveled by an object in a given amount of time.

58.

Which answer shows a measure of velocity?

a)

m/s north

b)

m/s2

c)

kg/cm3

d)

m/s

59.

Balanced Force

a)

The net force of an object does not equal zero which results in a change in the motion of the object.

b)

The net force on an object is zero

and the object’s motion does not change.

c)

The sum of all the forces acting on an object,

d)

The sum of the the forces stored in energy.

60.

Acceleration is correctly represented by which answer.

a)

Car with no motion

b)

Car moving at 30 mi/hr

c)

Car moving at 30 mi/hr as it turns the corner

d)

Car moving at a constant 60 mi/hr

61.

Which position on the roller coaster has the greatest potential energy ?

a)

A

b)

B

c)

C

d)

D

62.

What is a force that pulls objects together?

a)

Friction Force

b)

Gravity Force

c)

Buoyant Force

d)

Centripetal Force

63.

What is the definition of magnitude?

a)

To continue moving.

b)

The strength of an object or event.

c)

Energy in motion.

d)

The sum of all the forces exerted on an object

64.

If you are pushing a dresser across the room, which direction is the force of friction?

a)

The opposite direction of your applied force.

b)

The direction of your applied force.

c)

To the left of your applied force.

d)

To the right of your applied force.

65.

At which location does the roller coaster have the greatest kinetic energy?

a)

A

b)

B

c)

C

d)

D

66.

If the forces on this box are unbalanced the box will be _________________.

a)

At Rest

b)

In Motion

67.

What is the net force?

a)

0 N

b)

5 N

c)

10 N

d)

15 N

68.

Which of Newton's laws does this picture best represent?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

Newton's 4th Law

69.

Which answer choice correctly defines "force" as used in physics?

a)

To make someone do something against their will.

b)

A push or pull.

c)

A mysterious energy field created by life that binds the universe.

d)

An organized body of military personnel.

70.

Which of Newton's Laws does the picture best represent

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

d)

Newton's Fourth Law

71.

Which net force diagram shows at object "at rest"?

a)
b)
c)
d)
72.
a)

A

b)

B

c)

C

d)

D

73.

A tunnel has a length of 50 km. A car takes 20 min to travel between the two ends of the tunnel. What is the average speed of the car?

a)

2.5 km / h

b)

16.6 km / h

c)

150 km / h

d)

1000 km / h

74.
a)

pole 1 and pole 2.

b)

pole 2 and pole 3.

c)

pole 3 and pole 4.

d)

pole 4 and pole 5.

75.
a)

A

b)

B

c)

C

d)

D

76.
a)

A

b)

B

c)

C

d)

D

77.

A small steel ball is dropped from a low balcony. Ignoring air resistance, which statement describes its motion?

a)

It falls with decreasing acceleration.

b)

It falls with constant acceleration.

c)

It falls with decreasing speed.

d)

It falls with constant speed.

78.

Which speed/ time graph applies to an object at rest?

a)

A

b)

B

c)

C

d)

D

79.
a)

A

b)

B

c)

C

d)

D

80.
a)

10 m

b)

20 m

c)

100 m

d)

200 m

81.
a)

150 m

b)

300 m

c)

600 m

d)

1200 m

82.
a)

4.0 s

b)

6.0 s

c)

10 s

d)

16 s

83.
a)

A

b)

B

c)

C

d)

D

84.
a)

A

b)

B

c)

C

d)

D

85.
a)

A

b)

B

c)

C

d)

D

86.
a)

A

b)

B

c)

C

d)

D

87.

What is the efficiency of a solar cell if 1000 J of solar energy hits the cell and 200 J are converted into electrical energy?

a)

10%

b)

20%

c)

30%

d)

40%

88.

What is electrical energy converted into when a drill is used?

a)

Kinetic energy

b)

Sound

c)

Heat

d)

All of the above

89.

What is the correct equation for gravitational potential energy

a)

m x g x h

b)

m x g / h

c)

m x h / g

90.

What is energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

The ability to do work.

91.

What is potential energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

non renewable energy

92.

What is kinetic energy?

a)

moving energy

b)

potential energy

c)

stored energy

d)

renewable energy

93.
a)

A

b)

B

c)

C

d)

D

94.
a)

A

b)

B

c)

C

d)

D

95.
a)

A

b)

B

c)

C

d)

D

96.

What is designed to change electrical energy into kinetic energy?

a)

A. capacitor

b)

B. generator

c)

C. motor

d)

D. transformer

97.

A power station uses nuclear fission to obtain energy. In this process, nuclear energy is first changed into

a)

A. Chemical energy.

b)

B. Electrical energy.

c)

C. Gravitational energy.

d)

D. Internal energy.

98.
A vector is a quantity that had
a)
magnitude and time
b)
time and direction
c)
magnitude and direction
d)
direction and rhythm 
99.
When representing velocity as a vector...
a)
the directino of the arrow shows the direction of motion
b)
the length represents speed
c)
the length of the arrow is drawn to a suitable scale
d)
all of these
100.
A scalar is a quantity that had
a)
direction
b)
magnitude
c)
time
d)
color
101.
Which of the following would NOT be considered a projectile? 
a)
a cannonball thrown straight up
b)
a cannon ball rolling down a slope
c)
a cannonball rolling off a table
d)
a cannonball thrown in the air
102.
The horizontal component of a projectile's velocity is independent of...
a)
it's range
b)
time
c)
the vertical component
d)
none of these
103.
In the absence of air friction, the vertical component of a projectile's velocity doesn't change as the projectile moves. 
a)
True
b)
False
c)
Sometimes true
d)
Sometimes false
104.
In the absence of air friction, the horizontal component of a projectile's velocity doesn't change as the projectile moves. 
a)
True
b)
False
c)
Sometimes true
d)
Sometimes false
105.
In the absence of air resistance, the angle at which a thrown ball will do the farthest is
a)
15o
b)
300
c)
45o
d)
600
106.
A ball is thrown into the air at some angle. At the very top of the ball's path, its velocity is
a)
entirely vertical
b)
both vertical and horizontal
c)
entirely horizontal
d)
not enough info
107.
Which best approximates the resultant of a pair of 6-unit vectors at right angles to each other? 
a)
0
b)
6
c)
8
d)
12
108.
What is the resultant of a 3-unit vector and a 4-unit vector at right angles to each other? 
a)
1
b)
5
c)
7
d)
9
109.
At the instant a ball is thrown horizontally with a large force, an identical ball is dropped from the same height. Which ball hits the ground first? 
a)
Neither- they hit at the same time
b)
the horizontally thrown ball
c)
the dropped ball
d)
None of these
110.
T/F The vector sum is the resultant. 
a)
True
b)
False
111.
T/F The length of the vector represents magnitude. 
a)
True
b)
False
112.
T/F The orientation of a vector shows the direction. 
a)
True
b)
False
113.
T/F Mass is a vector quantity. 
a)
True
b)
False
114.

After a game, she often makes a sketch of the moves that were successful. The dotted line on the sketch shows the direction the ball was moving when she kicked it. The direction if her kick is the solid arrow. How did the motion of the ball change when Mary kicked it?

a)

The ball changed direction and its speed increased.

b)

The ball came to a complete stop.

c)

The ball continued moving in the same direction and its speed increased.

d)

The ball continued moving in the same direction and its speed decreased.

115.

What objects motion would most likely be represented by the graph?

a)

The movement of a football being thrown down the field.

b)

An airplane touching down on a runway.

c)

The movement of a car at the start of a race.

d)

A baseball pitched and then hit for a homerun.

116.

How are speed and velocity different?

a)

Speed included direction.

b)

Speed indicates momentum.

c)

Velocity includes momentum.

d)

Velocity includes direction.

117.

Betty Sue pulls on a box with a force of 18 N to the right. Robert pulls the same box from the opposite side with a force of 20 N to the left. What will be the result?

a)

The box will move up because of the combined force of 38 N.

b)

The box will move to the left because of a net force of 2 N.

c)

The box will move to the right because of a net force of 2 N.

d)

The box will remain at rest.

118.

Sometimes tectonic plates do not move easily passed one another, and the plates become stuck. Forces build up, and when the plates finally move, tension is released, as shown. The sudden movement of the plates is caused by:

a)

The mass of the plates

b)

Unbalanced forces

c)

Gravitational forces

d)

Centripetal forces

119.

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

a)

70 m/s2

b)

70 m west

c)

70 m/s west

d)

70 m/s

120.

A child jumps off of a sled toward the west while the sled is stopped at the bottom of a hill. Based on the law of action-reaction, in what direction will the sled most likely move as the student jumps off?

a)

West

b)

South

c)

North

d)

East

121.

In order to ride a bicycle up a hill with increasing speed---

a)

it is impossible to ride up a hill with increasing speed.

b)

The rider's pedal force must be equal to the friction and the force of gravity.

c)

The rider's pedal force must be greater than friction and the force of gravity.

d)

The rider's pedal force must be less than friction and the force of gravity.

122.

According to Newton't first law (law of intertia) ---

a)

When you drop a tennis ball it will bounce back

b)

when you pull a table cloth out from under dishes the dishes will stay on the table.

c)

When you kick a soccer ball the ball pushes back on your foot.

d)

when you jump off a sled it will move in the opposite direction you jump.

123.

A man hits a pie pan with an egg sitting on top of a toilet paper roll and the egg fell straigt into the cup of water beneath it. Which one of these best explains why the egg fell straight down into the cup instead of staying on the toilet paper roll and pie pan?

a)

Moving the pie pan and toilet paper roll applied an action force to the egg. Since the pie pan was gon, gravity applied a reaction to the egg.

b)

The egg was at rest until the pie pan and toilet paper roll were removed, so it remained at rest in the same location. Once the pie pan was gone, the unbalanced force of gravity caused the egg to fall.

c)

The pie pan and toilet paper roll had less mass than the egg, so a smaller force of gravity acted on the pie pan and toilet paper roll. The larger force of gravity on the egg made it fall.

d)

The acceleration of the egg falling into the cup was equal and opposite to the acceleration of the pie pan and toilet paper roll.

124.

Susan plays a computer game where he designs rollerA coasters for a virtual amusement park. Each diagram below illustrates a path for the roller coaster car to travel. Which two tracks should Susan choose if she wants the roller coaster car to have only kinetic energy left.

a)

A & C

b)

B

c)

C

d)

D

e)

B & D

125.

What type of motion would NOT be described by the graph?

a)

Riding a bike to school and back.

b)

Driving to the store and then back.

c)

skateboarding to the park and back

d)

Shooting a bullet at a target on the shooting range.

126.

What are the two factors that affect the momentum of an object?

a)

speed and velocity

b)

time and mass

c)

distance and displacement

d)

mass and velocity

127.
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
128.
Which object has the greatest momentum?
a)
An 18-wheeler tractor trailer at rest.
b)
An average mass person walking.
c)
A sports car driving on the highway.
129.

Momentum is a ____________________ quantity

a)

science

b)

scalar

c)

vector

d)

energy

130.

T/F: A big truck will always have more momentum than a small car.

a)

True

b)

False

131.

A 9300 kg railroad car traveling at a velocity of 5 m/s strikes a second boxcar that weighs 5000 kg at rest. The railroad car is brought to a sudden stop while the boxcar moves away from the collision. At what speed will the second boxcar move?

a)

18.6 m/s

b)

9.3 m/s

c)

7.5 m/s

d)

1.86 m/s

132.

What would happen to the momentum of a toy car if the mass is doubled and the velocity decreases by 1/2?

a)

It decreases by 1/4

b)

It decreases by 1/2

c)

Stays the same

d)

It is doubled

133.

A 0.15 kg mass moving at +26 m/s is slowed to a stop by a force of -390 N. How long does it take the force to stop the mass?

a)

0.01 s

b)

0.001 s

c)

0.02 s

d)

0.23 s

134.

A car is traveling 20 m/s. It takes 4 seconds with a 7,500 N force to come to a stop. What is the mass of the car?

a)

150 kg

b)

1,500 kg

c)

37,500 kg

d)

3,750 kg

135.

How can a tennis ball and a bowling ball have the same momentum?

a)

have the same speed

b)

have different speeds

c)

one is moving backwards

d)

they can't

136.
Momentum is conserved in this type of collision
a)
elastic
b)
inelastic
c)
momentum is conserved in both types of collisions
137.

A track athlete throws a discus that has a momentum of 42kg*m/s into a field with a velocity of 21 m/s. What is the mass of the discus?

a)

1 kg

b)

2 kg

c)

3 kg

d)

4 kg

138.
A runner has a momentum of 670 kg m/s and is traveling at a velocity of 9 m/s. What is his mass?
a)
74.4 kg
b)
6030 kg
c)
0.0134 kg
d)
679 kg
139.

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.

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