Question 1

According to Aristotle, which of these is a "natural" or "unforced" motion?

Accepted Answer

A)  A stone falling straight downward. 
B)  A book coming to rest as it slides along the floor. 
C)  Both of the above. 
D)  Neither of the above. 
A)  A stone falling straight downward. 
B)  A book coming to rest as it slides along the floor. 
C)  Both of the above. 
D)  Neither of the above.

Question 2

A satellite orbits the earth at an unchanging speed of 18,000 mph. This satellite

Accepted Answer

A)  is accelerated. 
B)  has a changing velocity. 
C)  Both of the above. 
D)  None of the above. 
A)  is accelerated. 
B)  has a changing velocity. 
C)  Both of the above. 
D)  None of the above.

Question 3

An object is dropped from rest on the planet Jupiter. At the end of 1 second, it has fallen 8 m and is moving at 16 m/s. At the end of two seconds the object's speed will be

Accepted Answer

A)  64 m/s. 
B)  16 m/s. 
C)  48 m/s. 
D)  32 m/s. 
E)  None of the above. 
A)  64 m/s. 
B)  16 m/s. 
C)  48 m/s. 
D)  32 m/s. 
E)  None of the above.

Question 4

A stone is lifted and released so that it falls to the ground. According to Aristotle, it fell because

Accepted Answer

A)  of electrical attraction. 
B)  its natural motion is to fall. 
C)  of gravity. 
D)  of friction. 
E)  of its inertia. 
A)  of electrical attraction. 
B)  its natural motion is to fall. 
C)  of gravity. 
D)  of friction. 
E)  of its inertia.

Question 5

On Mars, an object dropped from rest falls a distance of 4 m in 1 second. How far will it fall in 2 second, neglecting "air" resistance on Mars?

Accepted Answer

A)  8 m 
B)  12 m 
C)  16 m 
D)  32 m 
E)  24 m 
A)  8 m 
B)  12 m 
C)  16 m 
D)  32 m 
E)  24 m

Question 6

The figure represents a multiple- flash photo of two balls moving to the right, and shows both balls at several numbered times. In the figure,

Accepted Answer

A)  neither ball is accelerated, and the upper ball is moving fastest. 
B)  both balls are accelerated, and the lower ball is moving fastest. 
C)  the lower ball is accelerated, but the upper ball is not accelerated. 
D)  both balls are accelerated, and the upper ball is moving fastest. 
E)  neither ball is accelerated, and the lower ball is moving fastest. 
A)  neither ball is accelerated, and the upper ball is moving fastest. 
B)  both balls are accelerated, and the lower ball is moving fastest. 
C)  the lower ball is accelerated, but the upper ball is not accelerated. 
D)  both balls are accelerated, and the upper ball is moving fastest. 
E)  neither ball is accelerated, and the lower ball is moving fastest.

Question 7

According to Aristotle, which of these is a "natural" or "unforced" form of motion?

Accepted Answer

A)  A stone falling straight downward. 
B)  A book coming to rest as it slides along the floor. 
C)  Both a stone falling straight downward and a sliding book coming to rest are natural motions. 
D)  Neither a stone falling straight downward nor a sliding book coming to rest are natural motions. 
A)  A stone falling straight downward. 
B)  A book coming to rest as it slides along the floor. 
C)  Both a stone falling straight downward and a sliding book coming to rest are natural motions. 
D)  Neither a stone falling straight downward nor a sliding book coming to rest are natural motions.

Question 8

The acceleration due to gravity is 10 m/sec2. If an object falls from rest, its instantaneous speed at the end of the fifth second is (neglecting air resistance)

Accepted Answer

A)  100 m/sec. 
B)  5 m/sec. 
C)  10 m/sec. 
D)  50 m/sec. 
E)  impossible to determine from the given information. 
A)  100 m/sec. 
B)  5 m/sec. 
C)  10 m/sec. 
D)  50 m/sec. 
E)  impossible to determine from the given information.

Question 9

The figure represents a multiple- flash photo of two balls moving to the right, and shows both balls at several numbered times. The time between flashes is 0.20 s, and the large divisions on the measuring rod are centimeters. The speed of the lower ball is

Accepted Answer

A)  4.8 cm/s. 
B)  6 cm/s. 
C)  0.4 cm/s. 
D)  1.2 cm/s. 
E)  0.8 cm/s. 
A)  4.8 cm/s. 
B)  6 cm/s. 
C)  0.4 cm/s. 
D)  1.2 cm/s. 
E)  0.8 cm/s.

Question 10

Is it possible for an object to accelerate but without changing its speed?

Accepted Answer

A)  Yes, for example when a car is halfway up a straight hill [a hill whose slope, or angle with the horizontal, does not change] and moving a an unchanging speed. 
B)  Yes, for example when a car turns a corner while maintaining an unchanging speed. 
C)  Both of the above. 
D)  No, because the word "acceleration" means "a change in speed." 
E)  No, because the word "acceleration" means "speeding up." 
A)  Yes, for example when a car is halfway up a straight hill [a hill whose slope, or angle with the horizontal, does not change] and moving a an unchanging speed. 
B)  Yes, for example when a car turns a corner while maintaining an unchanging speed. 
C)  Both of the above. 
D)  No, because the word "acceleration" means "a change in speed." 
E)  No, because the word "acceleration" means "speeding up."

Question 11

Meteors in outer space keep moving, rather than slowing down and stopping. This behavior is predicted by

Accepted Answer

A)  the law of force pairs. 
B)  Newton's law of motion. 
C)  Aristotle's principle of natural motion. 
D)  the law of inertia. 
E)  Galileo's law of falling. 
A)  the law of force pairs. 
B)  Newton's law of motion. 
C)  Aristotle's principle of natural motion. 
D)  the law of inertia. 
E)  Galileo's law of falling.

Question 12

While a rock is falling straight down it has

Accepted Answer

A)  a constant [or unchanging] acceleration. 
B)  a decreasing acceleration. 
C)  an increasing acceleration. 
D)  zero acceleration. 
E)  None of the above. 
A)  a constant [or unchanging] acceleration. 
B)  a decreasing acceleration. 
C)  an increasing acceleration. 
D)  zero acceleration. 
E)  None of the above.

Question 13

Which of the following situations represents a car whose speed is increasing?

Accepted Answer

A)  In equal times, a car covers shorter and shorter distances. 
B)  A car covers equal distances in equal times. 
C)  A car takes longer and longer times to cover equal distances. 
D)  A car covers equal distances in shorter and shorter times. 
E)  None of the above. 
A)  In equal times, a car covers shorter and shorter distances. 
B)  A car covers equal distances in equal times. 
C)  A car takes longer and longer times to cover equal distances. 
D)  A car covers equal distances in shorter and shorter times. 
E)  None of the above.

Question 14

An object is not accelerated if

Accepted Answer

A)  its speed remains unchanged while its direction of motion changes. 
B)  its speed changes while its direction of motion remains unchanged. 
C)  it is acted upon by an external influence. 
D)  its speed and its direction of motion are both unchanging. 
E)  both answers B and D are correct. 
A)  its speed remains unchanged while its direction of motion changes. 
B)  its speed changes while its direction of motion remains unchanged. 
C)  it is acted upon by an external influence. 
D)  its speed and its direction of motion are both unchanging. 
E)  both answers B and D are correct.

Question 15

Falling objects [dropped near the earth's surface, neglecting air resistance] all fall at

Accepted Answer

A)  an acceleration that is larger for more massive objects. 
B)  the same constant [or unchanging] acceleration. 
C)  the same constant (or unchanging) speed. 
D)  the same constant [or unchanging] velocity. 
E)  zero acceleration. 
A)  an acceleration that is larger for more massive objects. 
B)  the same constant [or unchanging] acceleration. 
C)  the same constant (or unchanging) speed. 
D)  the same constant [or unchanging] velocity. 
E)  zero acceleration.

Question 16

On the moon, an object dropped from rest falls a distance of 1 m in 1 second. How far will it have fallen during 3 seconds?

Accepted Answer

A)  12 m 
B)  6 m 
C)  3 m 
D)  18 m 
E)  9 m 
A)  12 m 
B)  6 m 
C)  3 m 
D)  18 m 
E)  9 m

Question 17

While a rock is falling straight down it has

Accepted Answer

A)  an unchanging velocity. 
B)  zero velocity. 
C)  a decreasing velocity. 
D)  an increasing velocity. 
E)  None of the above. 
A)  an unchanging velocity. 
B)  zero velocity. 
C)  a decreasing velocity. 
D)  an increasing velocity. 
E)  None of the above.

Question 18

You give your physics book a quick push so that it slides along a table top. It soon slides to a stop. How would Aristotle and Galileo interpret this?

Accepted Answer

A)  Both of them say the force of friction slows it to a stop. 
B)  Both of them say that this is just the natural motion of the book. 
C)  Aristotle says the force of friction slows it to a stop, but Galileo says this is just the natural motion of the book. 
D)  They agree that physics books can make you crazy and it's best not to think about them. 
E)  Aristotle says this is just the natural motion of the book, but Galileo says the force of friction slows it to a stop. 
A)  Both of them say the force of friction slows it to a stop. 
B)  Both of them say that this is just the natural motion of the book. 
C)  Aristotle says the force of friction slows it to a stop, but Galileo says this is just the natural motion of the book. 
D)  They agree that physics books can make you crazy and it's best not to think about them. 
E)  Aristotle says this is just the natural motion of the book, but Galileo says the force of friction slows it to a stop.

Question 19

A book is given a brief shove along a table top and released so that it slides a short distance and comes to rest. Galileo would say that the book stopped because

Accepted Answer

A)  of friction. 
B)  the ether slows it down to a stop. 
C)  its natural motion is to come to rest. 
D)  of gravity. 
E)  of its inertia. 
A)  of friction. 
B)  the ether slows it down to a stop. 
C)  its natural motion is to come to rest. 
D)  of gravity. 
E)  of its inertia.

Question 20

While a stone is falling [neglecting air resistance],

Accepted Answer

A)  it is accelerated. 
B)  its speed is changing. 
C)  the direction of its velocity is downward. 
D)  All of the above. 
E)  None of the above. 
A)  it is accelerated. 
B)  its speed is changing. 
C)  the direction of its velocity is downward. 
D)  All of the above. 
E)  None of the above.

According to Aristotle, which of these is a "natural" or "unforced" motion?

A satellite orbits the earth at an unchanging speed of 18,000 mph. This satellite

An object is dropped from rest on the planet Jupiter. At the end of 1 second, it has fallen 8 m and is moving at 16 m/s. At the end of two seconds the object's speed will be

A stone is lifted and released so that it falls to the ground. According to Aristotle, it fell because

On Mars, an object dropped from rest falls a distance of 4 m in 1 second. How far will it fall in 2 second, neglecting "air" resistance on Mars?

The figure represents a multiple- flash photo of two balls moving to the right, and shows both balls at several numbered times. In the figure,

According to Aristotle, which of these is a "natural" or "unforced" form of motion?

The acceleration due to gravity is 10 m/sec². If an object falls from rest, its instantaneous speed at the end of the fifth second is (neglecting air resistance)

The figure represents a multiple- flash photo of two balls moving to the right, and shows both balls at several numbered times. The time between flashes is 0.20 s, and the large divisions on the measuring rod are centimeters. The speed of the lower ball is

Is it possible for an object to accelerate but without changing its speed?

Meteors in outer space keep moving, rather than slowing down and stopping. This behavior is predicted by

While a rock is falling straight down it has

Which of the following situations represents a car whose speed is increasing?

An object is not accelerated if

Falling objects [dropped near the earth's surface, neglecting air resistance] all fall at

On the moon, an object dropped from rest falls a distance of 1 m in 1 second. How far will it have fallen during 3 seconds?

While a rock is falling straight down it has

You give your physics book a quick push so that it slides along a table top. It soon slides to a stop. How would Aristotle and Galileo interpret this?

A book is given a brief shove along a table top and released so that it slides a short distance and comes to rest. Galileo would say that the book stopped because

While a stone is falling [neglecting air resistance],

The Way of Science: Experience and Reason

Atoms: the Nature of Things

Why Things Move As They Do

Newtons Universe

Conservation of Energy: You Cant Get Ahead

Second Law of Thermodynamics: and You Cant Even Break Even

Light and Electromagnetism

Electromagnetism Radiation and Global Climate Change

The Special Theory of Relativity

The General Theory of Relativity and the New Cosmology

The Quantum Idea

The Quantum Universe

The Nucleus and Radioactivity: an New Force

Fusion and Fission: and a New Energy

The Energy Challenge

Quantum Fields: Relativity Meets the Quantum

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Exam 3: How Things Move: Galileo Asks the Right Questions

According to Aristotle, which of these is a "natural" or "unforced" motion?

A satellite orbits the earth at an unchanging speed of 18,000 mph. This satellite

An object is dropped from rest on the planet Jupiter. At the end of 1 second, it has fallen 8 m and is moving at 16 m/s. At the end of two seconds the object's speed will be

A stone is lifted and released so that it falls to the ground. According to Aristotle, it fell because

On Mars, an object dropped from rest falls a distance of 4 m in 1 second. How far will it fall in 2 second, neglecting "air" resistance on Mars?

The figure represents a multiple- flash photo of two balls moving to the right, and shows both balls at several numbered times. In the figure,

According to Aristotle, which of these is a "natural" or "unforced" form of motion?

The acceleration due to gravity is 10 m/sec2. If an object falls from rest, its instantaneous speed at the end of the fifth second is (neglecting air resistance)

The figure represents a multiple- flash photo of two balls moving to the right, and shows both balls at several numbered times. The time between flashes is 0.20 s, and the large divisions on the measuring rod are centimeters. The speed of the lower ball is

Is it possible for an object to accelerate but without changing its speed?

Meteors in outer space keep moving, rather than slowing down and stopping. This behavior is predicted by

While a rock is falling straight down it has

Which of the following situations represents a car whose speed is increasing?

An object is not accelerated if

Falling objects [dropped near the earth's surface, neglecting air resistance] all fall at

On the moon, an object dropped from rest falls a distance of 1 m in 1 second. How far will it have fallen during 3 seconds?

While a rock is falling straight down it has

You give your physics book a quick push so that it slides along a table top. It soon slides to a stop. How would Aristotle and Galileo interpret this?

A book is given a brief shove along a table top and released so that it slides a short distance and comes to rest. Galileo would say that the book stopped because

While a stone is falling [neglecting air resistance],

The Way of Science: Experience and Reason

Atoms: the Nature of Things

Why Things Move As They Do

Newtons Universe

Conservation of Energy: You Cant Get Ahead

Second Law of Thermodynamics: and You Cant Even Break Even

Light and Electromagnetism

Electromagnetism Radiation and Global Climate Change

The Special Theory of Relativity

The General Theory of Relativity and the New Cosmology

The Quantum Idea

The Quantum Universe

The Nucleus and Radioactivity: an New Force

Fusion and Fission: and a New Energy

The Energy Challenge

Quantum Fields: Relativity Meets the Quantum

Filters

The acceleration due to gravity is 10 m/sec². If an object falls from rest, its instantaneous speed at the end of the fifth second is (neglecting air resistance)