Question 1

The acceleration of a cart moving down an inclined plane (a ramp)

Accepted Answer

A) is constant. 
B) increases with time. 
C) decreases with time. 
A) is constant. 
B) increases with time. 
C) decreases with time.

Question 2

Aristotle treated motion by

Accepted Answer

A) comparing the distance traveled with the time of travel. 
B) measurements of distance travelled. 
C) classifying it into two classes. 
D) all of the above 
A) comparing the distance traveled with the time of travel. 
B) measurements of distance travelled. 
C) classifying it into two classes. 
D) all of the above

Question 3

When a crate slides down an incline at a constant velocity it is

Accepted Answer

A) in dynamic equilibrium. 
B) not in dynamic equilibrium. 
C) in a state of being in and out of dynamic equilibrium. 
D) none of the above 
A) in dynamic equilibrium. 
B) not in dynamic equilibrium. 
C) in a state of being in and out of dynamic equilibrium. 
D) none of the above

Question 4

In a dream you're in a car traveling at 50 km/h and you bump into another car traveling toward you at 48 km/h. The speed of impact is

Accepted Answer

A) 48 km/h. 
B) 50 km/h. 
C) 98 km/h. 
D) 2400 km/h. 
A) 48 km/h. 
B) 50 km/h. 
C) 98 km/h. 
D) 2400 km/h.

Question 5

When a falling object gains 10 m/s each second, its acceleration is

Accepted Answer

A) 10 m/s. 
B) 10 m/s2. 
C) directed upward. 
D) steadily increasing. 
A) 10 m/s. 
B) 10 m/s2. 
C) directed upward. 
D) steadily increasing.

Question 6

A glance at your speedometer will tell you your

Accepted Answer

A) average speed. 
B) instantaneous speed. 
C) overall speed. 
D) acceleration. 
A) average speed. 
B) instantaneous speed. 
C) overall speed. 
D) acceleration.

Question 7

Give three examples of the equilibrium rule that are not cited in the textbook.

Accepted Answer

Open ended. Whatever the objec

Question 8

Which has zero acceleration?

Accepted Answer

A) an object at rest 
B) an object moving at constant velocity 
C) an object in mechanical equilibrium 
D) all of the above 
E) none of the above 
A) an object at rest 
B) an object moving at constant velocity 
C) an object in mechanical equilibrium 
D) all of the above 
E) none of the above

Question 9

A kilogram is a measure of an object's

Accepted Answer

A) weight. 
B) force. 
C) mass. 
D) gravity. 
A) weight. 
B) force. 
C) mass. 
D) gravity.

Question 10

When sign painters Burl and Paul stand on opposite ends of a scaffold, the tensions in each of the two supporting ropes

Accepted Answer

A) are equal. 
B) depend on the relative weights of Burl and Paul. 
C) combine to equal zero. 
D) none of the above 
A) are equal. 
B) depend on the relative weights of Burl and Paul. 
C) combine to equal zero. 
D) none of the above

Question 11

An object that has twice as much mass as another object also has twice as much

Accepted Answer

A) inertia. 
B) velocity. 
C) gravitational acceleration. 
D) volume. 
E) all of the above 
A) inertia. 
B) velocity. 
C) gravitational acceleration. 
D) volume. 
E) all of the above

Question 12

When a 10-kg block is simultaneously pushed toward the east with 20 N and toward the west with 15 N, the combination of these forces on the block is

Accepted Answer

A) 5 N west. 
B) 5 N east. 
C) 35 N east 
D) 35 N west. 
A) 5 N west. 
B) 5 N east. 
C) 35 N east 
D) 35 N west.

Question 13

When you push a crate across a level floor at constant speed, friction between the crate and the floor is

Accepted Answer

A) less than your pushing force. 
B) the same amount as your pushing force. 
C) more than your pushing force. 
D) none of the above 
A) less than your pushing force. 
B) the same amount as your pushing force. 
C) more than your pushing force. 
D) none of the above

Question 14

When she hikes a distance of 1 km in a time of one-half hour her average speed is

Accepted Answer

A) nearly 1 km/h. 
B) 1 km/h. 
C) slightly more than 1 km/h. 
D) twice 1 km/h. 
A) nearly 1 km/h. 
B) 1 km/h. 
C) slightly more than 1 km/h. 
D) twice 1 km/h.

Question 15

An object in mechanical equilibrium is an object

Accepted Answer

A) at rest. 
B) moving at constant velocity. 
C) with no acceleration. 
D) all of the above 
A) at rest. 
B) moving at constant velocity. 
C) with no acceleration. 
D) all of the above

Question 16

If a freely falling object were somehow equipped with a speedometer on a planet where the acceleration due to gravity is 20 m/s2, then its speed reading would increase each second by

Accepted Answer

A) 10 m/s. 
B) 20 m/s. 
C) 30 m/s. 
D) 40 m/s. 
E) depends on its initial speed. 
A) 10 m/s. 
B) 20 m/s. 
C) 30 m/s. 
D) 40 m/s. 
E) depends on its initial speed.

Question 17

According to Galileo, the test of scientific truth is

Accepted Answer

A) experiment. 
B) philosophical discussion. 
C) finding patterns in nature. 
D) logic. 
A) experiment. 
B) philosophical discussion. 
C) finding patterns in nature. 
D) logic.

Question 18

Which has the greatest mass?

Accepted Answer

A) king-size pillow 
B) a scrunched up king-size pillow 
C) automobile battery 
D) all about the same 
A) king-size pillow 
B) a scrunched up king-size pillow 
C) automobile battery 
D) all about the same

Question 19

An object is pulled with two forces, 10 N northward and 15 N southward. The magnitude of the net force is

Accepted Answer

A) 0 N. 
B) 5 N. 
C) 10 N. 
D) 15 N. 
E) none of the above 
A) 0 N. 
B) 5 N. 
C) 10 N. 
D) 15 N. 
E) none of the above

Question 20

The equilibrium rule F = 0 applies to

Accepted Answer

A) objects or systems at rest. 
B) objects or systems in uniform motion in a straight line. 
C) both 
D) neither 
A) objects or systems at rest. 
B) objects or systems in uniform motion in a straight line. 
C) both 
D) neither

Exam 1: Patterns of Motion and Equilibrium

The acceleration of a cart moving down an inclined plane (a ramp)

Aristotle treated motion by

When a crate slides down an incline at a constant velocity it is

In a dream you're in a car traveling at 50 km/h and you bump into another car traveling toward you at 48 km/h. The speed of impact is

When a falling object gains 10 m/s each second, its acceleration is

A glance at your speedometer will tell you your

Give three examples of the equilibrium rule that are not cited in the textbook.

Which has zero acceleration?

A kilogram is a measure of an object's

When sign painters Burl and Paul stand on opposite ends of a scaffold, the tensions in each of the two supporting ropes

An object that has twice as much mass as another object also has twice as much

When a 10-kg block is simultaneously pushed toward the east with 20 N and toward the west with 15 N, the combination of these forces on the block is

When you push a crate across a level floor at constant speed, friction between the crate and the floor is

When she hikes a distance of 1 km in a time of one-half hour her average speed is

An object in mechanical equilibrium is an object

If a freely falling object were somehow equipped with a speedometer on a planet where the acceleration due to gravity is 20 m/s2, then its speed reading would increase each second by

According to Galileo, the test of scientific truth is

Which has the greatest mass?

An object is pulled with two forces, 10 N northward and 15 N southward. The magnitude of the net force is

The equilibrium rule F = 0 applies to

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Timereading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: the Nature of Science

Filters

If a freely falling object were somehow equipped with a speedometer on a planet where the acceleration due to gravity is 20 m/s², then its speed reading would increase each second by