Question 1

What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 s?

Accepted Answer

A) 0 m/s2 
B) 10 km/h/s 
C) 10 m/s2 
D) 1000 km/h/s 
A) 0 m/s2 
B) 10 km/h/s 
C) 10 m/s2 
D) 1000 km/h/s

Question 2

Fido weighs 120 N and carries Trixie who weighs 40 N on her back. The support force on Fido's feet is

Accepted Answer

A) 40 N. 
B) 120 N. 
C) 160 N. 
D) more than 160 N. 
A) 40 N. 
B) 120 N. 
C) 160 N. 
D) more than 160 N.

Question 3

An object weighs 30 N on Earth. A second object weighs 30 N on the Moon. The object with the greater mass is the one on

Accepted Answer

A) Earth. 
B) the Moon. 
C) same for each. 
D) not enough information 
A) Earth. 
B) the Moon. 
C) same for each. 
D) not enough information

Question 4

When you stand at rest on a floor, the number of vertical forces acting on you is

Accepted Answer

A) zero. 
B) one. 
C) two. 
D) three. 
E) four. 
A) zero. 
B) one. 
C) two. 
D) three. 
E) four.

Question 5

If Burl carried Paul piggy-back while standing in the middle of a scaffold, the tensions in the two supporting ropes would

Accepted Answer

A) cancel to zero. 
B) be equal. 
C) be unequal. 
D) more easily support Burl and Paul. 
A) cancel to zero. 
B) be equal. 
C) be unequal. 
D) more easily support Burl and Paul.

Question 6

If you toss a ball straight upward at 40 m/s with no air resistance, one second after it reaches the top of its path its speed is

Accepted Answer

A) zero. 
B) 10 m/s. 
C) 20 m/s. 
D) 30 m/s 
E) 40 m/s. 
A) zero. 
B) 10 m/s. 
C) 20 m/s. 
D) 30 m/s 
E) 40 m/s.

Question 7

The resistive force of friction occurs for

Accepted Answer

A) solids. 
B) liquids. 
C) gases. 
D) all of the above 
A) solids. 
B) liquids. 
C) gases. 
D) all of the above

Question 8

The average speed of a deer traveling a distance of 2 km in a time of one-half hour is

Accepted Answer

A) 1 km/h. 
B) 2 km/h. 
C) 4 km/h. 
D) more than 4 km/h. 
A) 1 km/h. 
B) 2 km/h. 
C) 4 km/h. 
D) more than 4 km/h.

Question 9

At the end of 2 seconds of free fall, an apple falling from rest has a speed of

Accepted Answer

A) 1 m/s. 
B) 5 m/s. 
C) 10 m/s. 
D) more than 10 m/s. 
A) 1 m/s. 
B) 5 m/s. 
C) 10 m/s. 
D) more than 10 m/s.

Question 10

You hang from a pair of gym rings and the upward support forces of the rings will always

Accepted Answer

A) each be half your weight. 
B) each be equal to your weight. 
C) add up to equal your weight. 
D) add up to more than your weight. 
A) each be half your weight. 
B) each be equal to your weight. 
C) add up to equal your weight. 
D) add up to more than your weight.

Question 11

The gain in speed each second for a freely falling object is about

Accepted Answer

A) 0 m/s. 
B) 5 m/s. 
C) 10 m/s. 
D) 20 m/s. 
E) depends on the initial speed. 
A) 0 m/s. 
B) 5 m/s. 
C) 10 m/s. 
D) 20 m/s. 
E) depends on the initial speed.

Question 12

When a 10-N object is suspended at rest by two vertical strands of rope, the tension in each rope is

Accepted Answer

A) less than 5 N. 
B) 5 N. 
C) more than 5 N. 
D) 10 N. 
A) less than 5 N. 
B) 5 N. 
C) more than 5 N. 
D) 10 N.

Question 13

Galileo said that if you rolled a ball along a level surface it would

Accepted Answer

A) slow down due to its natural tendency to come to rest. 
B) keep rolling without slowing down if no friction acted upon it. 
C) roll as long as its inertia nudged it along. 
D) roll in the opposite direction. 
A) slow down due to its natural tendency to come to rest. 
B) keep rolling without slowing down if no friction acted upon it. 
C) roll as long as its inertia nudged it along. 
D) roll in the opposite direction.

Question 14

In contrast to Aristotle's way of explaining nature, Galileo relied on

Accepted Answer

A) experiment. 
B) logic. 
C) patterns. 
D) mathematics. 
A) experiment. 
B) logic. 
C) patterns. 
D) mathematics.

Question 15

The two measurements necessary for calculating average speed are

Accepted Answer

A) acceleration and time. 
B) velocity and time. 
C) distance and time. 
D) distance and acceleration. 
E) velocity and distance. 
A) acceleration and time. 
B) velocity and time. 
C) distance and time. 
D) distance and acceleration. 
E) velocity and distance.

Question 16

When you stand at rest on a pair of bathroom scales, the readings on the scales will always

Accepted Answer

A) each be half your weight. 
B) each equal your weight. 
C) add to equal your weight. 
D) add up to more than your weight. 
A) each be half your weight. 
B) each equal your weight. 
C) add to equal your weight. 
D) add up to more than your weight.

Question 17

A parachutist falling at constant velocity is in a state of

Accepted Answer

A) dynamic equilibrium. 
B) non-dynamic equilibrium. 
C) being in and out of dynamic equilibrium. 
D) none of the above 
A) dynamic equilibrium. 
B) non-dynamic equilibrium. 
C) being in and out of dynamic equilibrium. 
D) none of the above

Question 18

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

Accepted Answer

A) north. 
B) south. 
C) east. 
D) west. 
E) none of the above 
A) north. 
B) south. 
C) east. 
D) west. 
E) none of the above

Question 19

At the end of two seconds of free fall, an object released from rest will have a speed of

Accepted Answer

A) 5 m/s. 
B) 10 m/s. 
C) 15 m/s. 
D) none of the above 
A) 5 m/s. 
B) 10 m/s. 
C) 15 m/s. 
D) none of the above

Question 20

Your weight is

Accepted Answer

A) another word for your mass. 
B) the gravitational attraction between you and Earth. 
C) a property of mechanical equilibrium. 
D) the same in all locations. 
A) another word for your mass. 
B) the gravitational attraction between you and Earth. 
C) a property of mechanical equilibrium. 
D) the same in all locations.

Exam 1: Patterns of Motion and Equilibrium

What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 s?

Fido weighs 120 N and carries Trixie who weighs 40 N on her back. The support force on Fido's feet is

An object weighs 30 N on Earth. A second object weighs 30 N on the Moon. The object with the greater mass is the one on

When you stand at rest on a floor, the number of vertical forces acting on you is

If Burl carried Paul piggy-back while standing in the middle of a scaffold, the tensions in the two supporting ropes would

If you toss a ball straight upward at 40 m/s with no air resistance, one second after it reaches the top of its path its speed is

The resistive force of friction occurs for

The average speed of a deer traveling a distance of 2 km in a time of one-half hour is

At the end of 2 seconds of free fall, an apple falling from rest has a speed of

You hang from a pair of gym rings and the upward support forces of the rings will always

The gain in speed each second for a freely falling object is about

When a 10-N object is suspended at rest by two vertical strands of rope, the tension in each rope is

Galileo said that if you rolled a ball along a level surface it would

In contrast to Aristotle's way of explaining nature, Galileo relied on

The two measurements necessary for calculating average speed are

When you stand at rest on a pair of bathroom scales, the readings on the scales will always

A parachutist falling at constant velocity is in a state of

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

At the end of two seconds of free fall, an object released from rest will have a speed of

Your weight is

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

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