Question 1

You're driving down the highway and a lovebug spatters onto your windshield. Which undergoes the greater force of impact?

Accepted Answer

A) the lovebug 
B) your car 
C) both the same 
A) the lovebug 
B) your car 
C) both the same C

Question 2

If you push an object twice as far while applying the same force, you do

Accepted Answer

A) twice as much work. 
B) four times as much work. 
C) the same amount of work. 
A) twice as much work. 
B) four times as much work. 
C) the same amount of work. A

Question 3

A 1-kg chunk of putty moving at 1 m/s collides with and sticks to a 5-kg bowling ball that is initially at rest in space. The bowling ball and putty are then set in motion with a speed of

Accepted Answer

A) 1/4 m/s. 
B) 1/5 m/s. 
C) 1/6 m/s. 
D) none of the above 
E) not enough information 
A) 1/4 m/s. 
B) 1/5 m/s. 
C) 1/6 m/s. 
D) none of the above 
E) not enough information C

Question 4

Consider driving into a massive concrete wall with no "give," versus having a head-on collision at the same speed with an identical car moving toward you at the same speed. It would be more damaging to hit the

Accepted Answer

A) car. 
B) wall. 
C) the same 
A) car. 
B) wall. 
C) the same

Question 5

A music console is pushed a distance of 2 m with a force of 20 N. The work done on the console is

Accepted Answer

A) 2 J. 
B) 10 J. 
C) 20 J. 
D) 40 J. 
E) 80 J. 
A) 2 J. 
B) 10 J. 
C) 20 J. 
D) 40 J. 
E) 80 J.

Question 6

A 1-N apple falls to the ground. The apple hits the ground with a force of

Accepted Answer

A) 1 N. 
B) 2 N. 
C) 4 N. 
D) 10 N. 
E) not enough information 
A) 1 N. 
B) 2 N. 
C) 4 N. 
D) 10 N. 
E) not enough information

Question 7

An object lifted 10 m gains a certain amount of potential energy. If it is lifted 20 m, its gain in potential energy is

Accepted Answer

A) less. 
B) the same. 
C) twice as much. 
D) four times as much. 
E) more than four times as much. 
A) less. 
B) the same. 
C) twice as much. 
D) four times as much. 
E) more than four times as much.

Question 8

The force that accelerates a rocket in outer space is exerted on the rocket by the

Accepted Answer

A) rocket's engine. 
B) rocket's wings. 
C) atmospheric pressure. 
D) exhaust gases. 
E) none of the above 
A) rocket's engine. 
B) rocket's wings. 
C) atmospheric pressure. 
D) exhaust gases. 
E) none of the above

Question 9

A 0.5-kg blob of clay moving at 2.0 m/s slams into a 4.0-kg blob of clay at rest. The speed of the two blobs stuck together after colliding is about

Accepted Answer

A) 1.1 m/s. 
B) 1.5 m/s. 
C) 2.5 m/s. 
D) none of the above 
A) 1.1 m/s. 
B) 1.5 m/s. 
C) 2.5 m/s. 
D) none of the above

Question 10

Two identical arrows, one with twice the speed of the other are fired into a bale of hay. The faster arrow will penetrate the bale

Accepted Answer

A) the same distance as the slower arrow. 
B) twice as far as the slower arrow. 
C) four times as far as the slower arrow. 
D) more than four times as far as the slower arrow. 
E) none of the above 
A) the same distance as the slower arrow. 
B) twice as far as the slower arrow. 
C) four times as far as the slower arrow. 
D) more than four times as far as the slower arrow. 
E) none of the above

Question 11

Suppose a gun were made of strong lightweight material with a pellet that is more massive than the gun. Then firing speed is greater for the

Accepted Answer

A) pellet. 
B) recoiling gun. 
C) both are the same 
D) none of the above 
A) pellet. 
B) recoiling gun. 
C) both are the same 
D) none of the above

Question 12

Which of the following has the largest momentum relative to Earth?

Accepted Answer

A) a tightrope walker crossing Niagara Falls 
B) a pickup truck speeding along a highway 
C) a Mack truck parked in a lot 
D) a dog running down the street 
A) a tightrope walker crossing Niagara Falls 
B) a pickup truck speeding along a highway 
C) a Mack truck parked in a lot 
D) a dog running down the street

Question 13

The distinction between impulse and force involves the

Accepted Answer

A) distance the force acts. 
B) time the force acts. 
C) difference between acceleration and velocity. 
D) mass and its effect on resisting a change in momentum. 
A) distance the force acts. 
B) time the force acts. 
C) difference between acceleration and velocity. 
D) mass and its effect on resisting a change in momentum.

Question 14

A ball is moving at 4 m/s and has a momentum of 48 kg∙m/s. What is the ball's mass?

Accepted Answer

A) 4 kg 
B) 12 kg 
C) 48 kg 
D) 192 kg 
E) none of the above 
A) 4 kg 
B) 12 kg 
C) 48 kg 
D) 192 kg 
E) none of the above

Question 15

A 1-kg chunk of putty moving at 1 m/s collides and sticks to a 5-kg bowling ball initially at rest. The bowling ball and putty move with a momentum of

Accepted Answer

A) 0 kg∙m/s. 
B) 1 kg∙m/s. 
C) 2 kg∙m/s. 
D) 5 kg∙m/s. 
E) more than 5 kg∙m/s. 
A) 0 kg∙m/s. 
B) 1 kg∙m/s. 
C) 2 kg∙m/s. 
D) 5 kg∙m/s. 
E) more than 5 kg∙m/s.

Question 16

Exert 100 J in 50 s and your power output is

Accepted Answer

A) 1/4 W. 
B) 1/2 W. 
C) 2 W. 
D) 4 W. 
E) more than 4 W. 
A) 1/4 W. 
B) 1/2 W. 
C) 2 W. 
D) 4 W. 
E) more than 4 W.

Question 17

The most energy per unit mass can be extracted from

Accepted Answer

A) coal. 
B) petroleum. 
C) natural gas. 
D) uranium. 
A) coal. 
B) petroleum. 
C) natural gas. 
D) uranium.

Question 18

When a cannon fires a cannonball at a given speed, the smaller recoil speed of the cannon is due to different

Accepted Answer

A) forces. 
B) times. 
C) masses. 
D) momenta. 
A) forces. 
B) times. 
C) masses. 
D) momenta.

Question 19

A 4-kg ball has a momentum of 12 kg∙m/s. What is the ball's speed?

Accepted Answer

A) 3 m/s 
B) 4 m/s 
C) 12 m/s 
D) 48 m/s 
E) none of the above 
A) 3 m/s 
B) 4 m/s 
C) 12 m/s 
D) 48 m/s 
E) none of the above

Question 20

When a simple machine multiplies force, it decreases

Accepted Answer

A) potential energy. 
B) distance moved. 
C) both 
D) neither 
A) potential energy. 
B) distance moved. 
C) both 
D) neither

Exam 3: Momentum and Energy

You're driving down the highway and a lovebug spatters onto your windshield. Which undergoes the greater force of impact?

If you push an object twice as far while applying the same force, you do

A 1-kg chunk of putty moving at 1 m/s collides with and sticks to a 5-kg bowling ball that is initially at rest in space. The bowling ball and putty are then set in motion with a speed of

Consider driving into a massive concrete wall with no "give," versus having a head-on collision at the same speed with an identical car moving toward you at the same speed. It would be more damaging to hit the

A music console is pushed a distance of 2 m with a force of 20 N. The work done on the console is

A 1-N apple falls to the ground. The apple hits the ground with a force of

An object lifted 10 m gains a certain amount of potential energy. If it is lifted 20 m, its gain in potential energy is

The force that accelerates a rocket in outer space is exerted on the rocket by the

A 0.5-kg blob of clay moving at 2.0 m/s slams into a 4.0-kg blob of clay at rest. The speed of the two blobs stuck together after colliding is about

Two identical arrows, one with twice the speed of the other are fired into a bale of hay. The faster arrow will penetrate the bale

Suppose a gun were made of strong lightweight material with a pellet that is more massive than the gun. Then firing speed is greater for the

Which of the following has the largest momentum relative to Earth?

The distinction between impulse and force involves the

A ball is moving at 4 m/s and has a momentum of 48 kg∙m/s. What is the ball's mass?

A 1-kg chunk of putty moving at 1 m/s collides and sticks to a 5-kg bowling ball initially at rest. The bowling ball and putty move with a momentum of

Exert 100 J in 50 s and your power output is

The most energy per unit mass can be extracted from

When a cannon fires a cannonball at a given speed, the smaller recoil speed of the cannon is due to different

A 4-kg ball has a momentum of 12 kg∙m/s. What is the ball's speed?

When a simple machine multiplies force, it decreases

Patterns of Motion and Equilibrium

Newtons Laws of Motion

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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