Question 1

Nellie runs the length of a 100-yard football field in a time of 20 seconds.Her average running speed is

Accepted Answer

A) 1/2 yard/second. 
B) 5 yards/second. 
C) 50 yards/second. 
D) not enough information 
A) 1/2 yard/second. 
B) 5 yards/second. 
C) 50 yards/second. 
D) not enough information

Question 2

If a non-rotating object has no acceleration,then we can say for certain that it is

Accepted Answer

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

Question 3

In general,the friction forces between one object and another act

Accepted Answer

A) in the same direction. 
B) in opposite directions. 
C) at right angles to each other. 
D) none of the above 
A) in the same direction. 
B) in opposite directions. 
C) at right angles to each other. 
D) none of the above

Question 4

At the end of 1/2 second an apple freely 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 5

Joshua stands on a floor that supports him.When Sydney rides piggy-back on Joshua,the support force by the floor beneath Joshua

Accepted Answer

A) decreases. 
B) remains constant. 
C) increases. 
A) decreases. 
B) remains constant. 
C) increases.

Question 6

What is the acceleration of a scooter that maintains a constant velocity of 15 m/s for 10 s?

Accepted Answer

A) 0 m/s2 
B) 0.15 m/s2 
C) 1.5 m/s2 
D) 15 m/s2 
A) 0 m/s2 
B) 0.15 m/s2 
C) 1.5 m/s2 
D) 15 m/s2

Question 7

The scientist first credited for discovering the concept of inertia was

Accepted Answer

A) Aristotle. 
B) Galileo. 
C) Newton. 
D) Copernicus. 
A) Aristotle. 
B) Galileo. 
C) Newton. 
D) Copernicus.

Question 8

An empty jug of weight W is at rest on a table.When water of weight w is poured into it,the amount of support force supplied by the table is

Accepted Answer

A) W. 
B) W + w. 
C) W - w. 
D) none of the above 
A) W. 
B) W + w. 
C) W - w. 
D) none of the above

Question 9

Burl and Paul have a total weight of 1300 N.The tensions in the ropes that support the scaffold they stand on add to 1700 N.The weight of the scaffold itself must be

Accepted Answer

A) 400 N. 
B) 500 N. 
C) 600 N. 
D) 800 N. 
A) 400 N. 
B) 500 N. 
C) 600 N. 
D) 800 N.

Question 10

If a ball rolls down an inclined plane and gains 4 m/s each second it rolls,its acceleration is

Accepted Answer

A) one half of 4 m/s. 
B) one half of 4 m/s2. 
C) 4 m/s2. 
D) 10 m/s2. 
A) one half of 4 m/s. 
B) one half of 4 m/s2. 
C) 4 m/s2. 
D) 10 m/s2.

Question 11

You're lying on the sand on a breezy day when a pesky fly wishes to join you.The breeze is blowing at a steady 1 m/s.If the fly wishes to land on you it should hover over you while flying

Accepted Answer

A) about 2 m/s relative to the breeze. 
B) with the breeze at 1 m/s. 
C) against the breeze at 1 m/s. 
D) faster than 1 m/s but less than 2 m/s. 
A) about 2 m/s relative to the breeze. 
B) with the breeze at 1 m/s. 
C) against the breeze at 1 m/s. 
D) faster than 1 m/s but less than 2 m/s.

Question 12

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 13

Emily Easygo can paddle her canoe at 8 m/s in still water.With this speed she then paddles upstream in a river that runs downstream at 6 m/s.Her friend sitting on shore sees her speed as

Accepted Answer

A) 2 m/s. 
B) 6 m/s. 
C) 8 m/s. 
D) 10 m/s. 
A) 2 m/s. 
B) 6 m/s. 
C) 8 m/s. 
D) 10 m/s.

Question 14

A 3000-N bear grasping a vertical tree slides down at constant velocity.The friction force between the tree and the bear is

Accepted Answer

A) 30 N. 
B) 300 N. 
C) 3000 N. 
D) more than 3000 N. 
A) 30 N. 
B) 300 N. 
C) 3000 N. 
D) more than 3000 N.

Question 15

The support force on a 10-N book that rests on a horizontal surface is

Accepted Answer

A) less than 10 N. 
B) 10 N. 
C) greater than 10 N. 
D) dependent on whether the book lies flat or stands upright. 
A) less than 10 N. 
B) 10 N. 
C) greater than 10 N. 
D) dependent on whether the book lies flat or stands upright.

Question 16

Aristotle treated motion by

Accepted Answer

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

Question 17

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) eventually 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) eventually roll in the opposite direction.

Question 18

Phil Physiker standing at the edge of a cliff throws one ball straight up and another ball straight down,both with the same speed.Neglecting air resistance,which ball hits the ground below with the greater speed?

Accepted Answer

A) the one thrown upward 
B) the one thrown downward 
C) neither,both hit with the same speed 
A) the one thrown upward 
B) the one thrown downward 
C) neither,both hit with the same speed

Question 19

While in an airplane flying at 100 km/h you look down from the window and spot another airplane flying at the same speed in the opposite direction.Relative to you,the speed of the spotted plane is

Accepted Answer

A) zero. 
B) 100 km/h. 
C) 150 km/h. 
D) 200 km/h. 
A) zero. 
B) 100 km/h. 
C) 150 km/h. 
D) 200 km/h.

Question 20

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.

Exam 1: Patterns of Motion and Equilibrium

Nellie runs the length of a 100-yard football field in a time of 20 seconds.Her average running speed is

If a non-rotating object has no acceleration,then we can say for certain that it is

In general,the friction forces between one object and another act

At the end of 1/2 second an apple freely falling from rest has a speed of

Joshua stands on a floor that supports him.When Sydney rides piggy-back on Joshua,the support force by the floor beneath Joshua

What is the acceleration of a scooter that maintains a constant velocity of 15 m/s for 10 s?

The scientist first credited for discovering the concept of inertia was

An empty jug of weight W is at rest on a table.When water of weight w is poured into it,the amount of support force supplied by the table is

Burl and Paul have a total weight of 1300 N.The tensions in the ropes that support the scaffold they stand on add to 1700 N.The weight of the scaffold itself must be

If a ball rolls down an inclined plane and gains 4 m/s each second it rolls,its acceleration is

You're lying on the sand on a breezy day when a pesky fly wishes to join you.The breeze is blowing at a steady 1 m/s.If the fly wishes to land on you it should hover over you while flying

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

Emily Easygo can paddle her canoe at 8 m/s in still water.With this speed she then paddles upstream in a river that runs downstream at 6 m/s.Her friend sitting on shore sees her speed as

A 3000-N bear grasping a vertical tree slides down at constant velocity.The friction force between the tree and the bear is

The support force on a 10-N book that rests on a horizontal surface is

Aristotle treated motion by

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

Phil Physiker standing at the edge of a cliff throws one ball straight up and another ball straight down,both with the same speed.Neglecting air resistance,which ball hits the ground below with the greater speed?

While in an airplane flying at 100 km/h you look down from the window and spot another airplane flying at the same speed in the opposite direction.Relative to you,the speed of the spotted plane is

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

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 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