Question 1

Suppose you're coasting in a car at 60 km/h and apply the brakes until you slow to 40 km/h. When you suddenly release the brake, the car tends to

Accepted Answer

A) momentarily regain its higher initial speed. 
B) continue moving at 40 km/h in the absence of forces. 
C) decrease in speed whether other forces act or not. 
A) momentarily regain its higher initial speed. 
B) continue moving at 40 km/h in the absence of forces. 
C) decrease in speed whether other forces act or not.

Question 2

A given net force propels an object along a straight-line path by a force. 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 3

How many forces act on an upwardly tossed coin when it gets to the top of its path?

Accepted Answer

A) one; the force due to gravity 
B) two; gravity and the force in the coin itself 
C) three; gravity, the coin's internal force, and a turnaround force 
D) none of the above 
A) one; the force due to gravity 
B) two; gravity and the force in the coin itself 
C) three; gravity, the coin's internal force, and a turnaround force 
D) none of the above

Question 4

A skydiver steps from a helicopter and falls for 5 s before reaching terminal velocity. During this 5-s interval, her acceleration

Accepted Answer

A) is constant. 
B) increases. 
C) decreases. 
D) is zero. 
E) none of the above 
A) is constant. 
B) increases. 
C) decreases. 
D) is zero. 
E) none of the above

Question 5

Arnold Strongman and Suzie Small have a tug-of-war on a polished floor. Arnold wears socks and Suzie wears gym shoes. The likely winner is

Accepted Answer

A) Arnold. 
B) Suzie. 
C) neither, a tied score 
D) no basis for predicting 
A) Arnold. 
B) Suzie. 
C) neither, a tied score 
D) no basis for predicting

Question 6

A girl pulls on a 10-kg wagon with a constant force of 30 N. What is the wagon's acceleration?

Accepted Answer

A) 0.3 m/s2 
B) 3.0 m/s2 
C) 10 m/s2 
D) 30 m/s2 
E) 300 m/s2 
A) 0.3 m/s2 
B) 3.0 m/s2 
C) 10 m/s2 
D) 30 m/s2 
E) 300 m/s2

Question 7

A push on a 1-kg brick accelerates the brick. Neglecting friction, to equally accelerate a 10-kg brick requires the force to be

Accepted Answer

A) just as much. 
B) 10 times as much. 
C) 100 times as much. 
D) one-tenth the amount. 
E) none of the above 
A) just as much. 
B) 10 times as much. 
C) 100 times as much. 
D) one-tenth the amount. 
E) none of the above

Question 8

A 1-kg ball is thrown straight up at 10 m/s. Neglecting air resistance, the net force that acts on the ball when it is half way to the top of its path is

Accepted Answer

A) 1/2 N. 
B) 1 N. 
C) 5 N. 
D) 7.5 N. 
E) 10 N. 
A) 1/2 N. 
B) 1 N. 
C) 5 N. 
D) 7.5 N. 
E) 10 N.

Question 9

A pair of tennis balls fall through the air from a tall building. One ball is regular and the other is filled with lead pellets. The ball to reach the ground first is the

Accepted Answer

A) regular ball. 
B) lead-filled ball. 
C) same for both 
A) regular ball. 
B) lead-filled ball. 
C) same for both

Suppose you're coasting in a car at 60 km/h and apply the brakes until you slow to 40 km/h. When you suddenly release the brake, the car tends to

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

How many forces act on an upwardly tossed coin when it gets to the top of its path?

A skydiver steps from a helicopter and falls for 5 s before reaching terminal velocity. During this 5-s interval, her acceleration

Arnold Strongman and Suzie Small have a tug-of-war on a polished floor. Arnold wears socks and Suzie wears gym shoes. The likely winner is

A girl pulls on a 10-kg wagon with a constant force of 30 N. What is the wagon's acceleration?

A push on a 1-kg brick accelerates the brick. Neglecting friction, to equally accelerate a 10-kg brick requires the force to be

A 1-kg ball is thrown straight up at 10 m/s. Neglecting air resistance, the net force that acts on the ball when it is half way to the top of its path is

A pair of tennis balls fall through the air from a tall building. One ball is regular and the other is filled with lead pellets. The ball to reach the ground first is the

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 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

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Exam 2: Newtons Laws of Motion

Suppose you're coasting in a car at 60 km/h and apply the brakes until you slow to 40 km/h. When you suddenly release the brake, the car tends to

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

How many forces act on an upwardly tossed coin when it gets to the top of its path?

A skydiver steps from a helicopter and falls for 5 s before reaching terminal velocity. During this 5-s interval, her acceleration

Arnold Strongman and Suzie Small have a tug-of-war on a polished floor. Arnold wears socks and Suzie wears gym shoes. The likely winner is

A girl pulls on a 10-kg wagon with a constant force of 30 N. What is the wagon's acceleration?

A push on a 1-kg brick accelerates the brick. Neglecting friction, to equally accelerate a 10-kg brick requires the force to be

A 1-kg ball is thrown straight up at 10 m/s. Neglecting air resistance, the net force that acts on the ball when it is half way to the top of its path is

A pair of tennis balls fall through the air from a tall building. One ball is regular and the other is filled with lead pellets. The ball to reach the ground first is the

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 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