Question 1

When a 500-N parachutist opens his chute and experiences 800 N of air resistance,the net force on him is

Accepted Answer

A) 300 N downward. 
B) 500 N downward. 
C) 800 N downward. 
D) 300 N upward. 
E) 500 N upward. 
A) 300 N downward. 
B) 500 N downward. 
C) 800 N downward. 
D) 300 N upward. 
E) 500 N upward.

Question 2

When you step off a bus moving at 2 m/s,your horizontal speed when you meet the ground is

Accepted Answer

A) zero. 
B) less than 2 m/s but greater than zero. 
C) about 2 m/s. 
D) greater than 2 m/s. 
A) zero. 
B) less than 2 m/s but greater than zero. 
C) about 2 m/s. 
D) greater than 2 m/s.

Question 3

The acceleration of a rocket increases as it travels upward from the ground mainly because

Accepted Answer

A) gravity becomes weaker with increased distance. 
B) the applied force on the rocket increases as fuel is burned. 
C) the mass of the rocket decreases as fuel is burned. 
A) gravity becomes weaker with increased distance. 
B) the applied force on the rocket increases as fuel is burned. 
C) the mass of the rocket decreases as fuel is burned.

Question 4

An iron ball and a wooden ball of the same size are dropped from a tall tower.Taking air resistance into consideration,the object to hit the ground first will be the

Accepted Answer

A) lighter wooden ball. 
B) heavier iron ball. 
C) both hit at the same time. 
D) not enough information 
A) lighter wooden ball. 
B) heavier iron ball. 
C) both hit at the same time. 
D) not enough information

Question 5

A friend says that the heavyweight champion of the world cannot exert a force of 50 N on a piece of tissue paper with his best punch.The tissue paper is held in midair,no tricks.You

Accepted Answer

A) agree that it can't be done. 
B) have reservations about this assertion. 
C) disagree,for a good punch easily delivers this much force. 
A) agree that it can't be done. 
B) have reservations about this assertion. 
C) disagree,for a good punch easily delivers this much force.

Question 6

A given net force propels an object along a straight-line path.If the mass were doubled,its acceleration would

Accepted Answer

A) quadruple. 
B) double. 
C) stay the same. 
D) be half. 
E) none of the above 
A) quadruple. 
B) double. 
C) stay the same. 
D) be half. 
E) none of the above

Question 7

An object in motion tends to remain in motion

Accepted Answer

A) because of a force within the object. 
B) only when an external force acts on it. 
C) without the need of a force. 
D) due to its nature. 
A) because of a force within the object. 
B) only when an external force acts on it. 
C) without the need of a force. 
D) due to its nature.

When a 500-N parachutist opens his chute and experiences 800 N of air resistance,the net force on him is

When you step off a bus moving at 2 m/s,your horizontal speed when you meet the ground is

The acceleration of a rocket increases as it travels upward from the ground mainly because

An iron ball and a wooden ball of the same size are dropped from a tall tower.Taking air resistance into consideration,the object to hit the ground first will be the

A friend says that the heavyweight champion of the world cannot exert a force of 50 N on a piece of tissue paper with his best punch.The tissue paper is held in midair,no tricks.You

A given net force propels an object along a straight-line path.If the mass were doubled,its acceleration would

An object in motion tends to remain in motion

Patterns of Motion and Equilibrium

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 Time - Reading 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

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Exam 2: Newtons Laws of Motion

When a 500-N parachutist opens his chute and experiences 800 N of air resistance,the net force on him is

When you step off a bus moving at 2 m/s,your horizontal speed when you meet the ground is

The acceleration of a rocket increases as it travels upward from the ground mainly because

An iron ball and a wooden ball of the same size are dropped from a tall tower.Taking air resistance into consideration,the object to hit the ground first will be the

A friend says that the heavyweight champion of the world cannot exert a force of 50 N on a piece of tissue paper with his best punch.The tissue paper is held in midair,no tricks.You

A given net force propels an object along a straight-line path.If the mass were doubled,its acceleration would

An object in motion tends to remain in motion

Patterns of Motion and Equilibrium

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 Time - Reading 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