Question 1

A man weighing 800 N stands at rest on two bathroom scales so that his weight is distributed evenly over both scales.The reading on each scale is

Accepted Answer

A)  200 N.
B)  400 N.
C)  800 N.
D)  none of theseE) A) and D)
F) A) and C)

Question 2

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 up to equal your weight.D) All of the above
E) B) and C)

Question 3

Galileo's interpretation of motion differed from Aristotle's in that Galileo emphasized

Accepted Answer

A)  the acceleration of free fall.
B)  time rates.
C)  the role of distance in describing motion.
D)  all of these
E)  none of theseF) C) and D)
G) C) and E)

Question 4

A sheet of paper can be withdrawn from under a container of milk without toppling it if the paper is jerked quickly.This best demonstrates that

Accepted Answer

A)  the milk carton has no acceleration.
B)  there is an action-reaction pair of forces.
C)  gravity tends to hold the milk carton secure.
D)  the milk carton has inertia.
E)  none of theseF) A) and D)
G) C) and E)

Question 5

A 300-kg 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.E) B) and C)
F) A) and D)

Question 6

An object in mechanical equilibrium is an object

Accepted Answer

A)  at rest.
B)  moving with constant velocity.
C)  having no acceleration.
D)  all of theseE) A) and B)
F) A) and C)

Question 7

The force of friction on a sliding object is 10 N.The applied force needed to maintain a constant velocity is

Accepted Answer

A)  more than 10 N.
B)  less than 10 N.
C)  10 N.D) A) and C)
E) A) and B)

Question 8

When a rocket ship accelerating in outer space runs out of fuel,it

Accepted Answer

A)  accelerates for a short time,then slows down to a constant velocity.
B)  accelerates for a short time,slows down,and eventually stops.
C)  no longer accelerates.D) A) and B)
E) A) and C)

Question 9

Galileo's use of inclined planes allowed him to effectively

Accepted Answer

A)  slow down the acceleration of free fall.
B)  increase the acceleration beyond that of free fall.
C)  eliminate the acceleration of free fall.
D)  eliminate friction.E) B) and D)
F) B) and C)

Question 10

The scientist to first introduce the concept of inertia was

Accepted Answer

A)  Aristotle.
B)  Galileo.
C)  Newton.
D)  Copernicus.E) B) and D)
F) All of the above

Question 11

A package falls off a truck that is moving at 30 m/s.Neglecting air resistance,the horizontal speed of the package just before it hits the ground is

Accepted Answer

A)  zero.
B)  less than 30 m/s but larger than zero.
C)  about 30 m/s.
D)  more than 30 m/s.
E)  More information is needed for an estimate.F) All of the above
G) B) and D) C

Question 12

A truck is moving at constant velocity.Inside the storage compartment,a rock is dropped from the midpoint of the ceiling and strikes the floor below.The rock hits the floor

Accepted Answer

A)  exactly below the midpoint of the ceiling.
B)  ahead of the midpoint of the ceiling.
C)  behind the midpoint of the ceiling.
D)  More information is needed to solve this problem.
E)  none of theseF) B) and C)
G) A) and B) A

Question 13

If your automobile runs out of fuel while you are driving,the engine stops but you do not come to an abrupt stop.The concept that most explains why is

Accepted Answer

A)  inertia.
B)  gravity.
C)  acceleration.
D)  resistance.E) B) and D)
F) All of the above

Question 14

According to Newton's law of inertia,a railroad train in motion should continue going forever even if its engine is turned off.We never observe this because railroad trains

Accepted Answer

A)  move too slowly.
B)  are much too heavy.
C)  must go up and down hills.
D)  always have forces that oppose their motion.E) A) and B)
F) B) and C)

Question 15

Whirl a rock at the end of a string and it follows a circular path.If the string breaks,the tendency of the rock is to

Accepted Answer

A)  continue to follow a circular path.
B)  follow a straight-line path.
C)  increase its speed.
D)  revolve in a smaller circle.E) None of the above
F) All of the above B

Question 16

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 equal your weight.
C)  add up to equal your weight.D) B) and C)
E) A) and C)

Question 17

Whereas Aristotle relied on logic in explaining nature,Galileo relied on

Accepted Answer

A)  logic also.
B)  patterns.
C)  experiment.
D)  mathematics.E) A) and C)
F) A) and B)

Question 18

If no external forces are acting on a moving object,it will

Accepted Answer

A)  continue moving at the same speed.
B)  continue moving at the same velocity.
C)  move slower and slower until it finally stops.D) A) and C)
E) A) and B)

Exam 2: Newtons First Law of Motion: Inertia

A man weighing 800 N stands at rest on two bathroom scales so that his weight is distributed evenly over both scales.The reading on each scale is

Correct Answer
verified

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

Correct Answer
verified

Galileo's interpretation of motion differed from Aristotle's in that Galileo emphasized

Correct Answer
verified

A sheet of paper can be withdrawn from under a container of milk without toppling it if the paper is jerked quickly.This best demonstrates that

Correct Answer
verified

A 300-kg bear grasping a vertical tree slides down at constant velocity.The friction force between the tree and the bear is

Correct Answer
verified

An object in mechanical equilibrium is an object

Correct Answer
verified

The force of friction on a sliding object is 10 N.The applied force needed to maintain a constant velocity is

Correct Answer
verified

When a rocket ship accelerating in outer space runs out of fuel,it

Correct Answer
verified

Galileo's use of inclined planes allowed him to effectively

Correct Answer
verified

The scientist to first introduce the concept of inertia was

Correct Answer
verified

A package falls off a truck that is moving at 30 m/s.Neglecting air resistance,the horizontal speed of the package just before it hits the ground is

Correct Answer
verified
C

A truck is moving at constant velocity.Inside the storage compartment,a rock is dropped from the midpoint of the ceiling and strikes the floor below.The rock hits the floor

Correct Answer
verified
A

If your automobile runs out of fuel while you are driving,the engine stops but you do not come to an abrupt stop.The concept that most explains why is

Correct Answer
verified

According to Newton's law of inertia,a railroad train in motion should continue going forever even if its engine is turned off.We never observe this because railroad trains

Correct Answer
verified

Whirl a rock at the end of a string and it follows a circular path.If the string breaks,the tendency of the rock is to

Correct Answer
verified
B

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

Correct Answer
verified

Whereas Aristotle relied on logic in explaining nature,Galileo relied on

Correct Answer
verified

If no external forces are acting on a moving object,it will

Correct Answer
verified

Exam 2: Newtons First Law of Motion: Inertia

A man weighing 800 N stands at rest on two bathroom scales so that his weight is distributed evenly over both scales.The reading on each scale is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Galileo's interpretation of motion differed from Aristotle's in that Galileo emphasized

Correct AnswerverifiedShow Answer

A sheet of paper can be withdrawn from under a container of milk without toppling it if the paper is jerked quickly.This best demonstrates that

Correct AnswerverifiedShow Answer

A 300-kg bear grasping a vertical tree slides down at constant velocity.The friction force between the tree and the bear is

Correct AnswerverifiedShow Answer

An object in mechanical equilibrium is an object

Correct AnswerverifiedShow Answer

The force of friction on a sliding object is 10 N.The applied force needed to maintain a constant velocity is

Correct AnswerverifiedShow Answer

When a rocket ship accelerating in outer space runs out of fuel,it

Correct AnswerverifiedShow Answer

Galileo's use of inclined planes allowed him to effectively

Correct AnswerverifiedShow Answer

The scientist to first introduce the concept of inertia was

Correct AnswerverifiedShow Answer

A package falls off a truck that is moving at 30 m/s.Neglecting air resistance,the horizontal speed of the package just before it hits the ground is

Correct AnswerverifiedC

A truck is moving at constant velocity.Inside the storage compartment,a rock is dropped from the midpoint of the ceiling and strikes the floor below.The rock hits the floor

Correct AnswerverifiedA

If your automobile runs out of fuel while you are driving,the engine stops but you do not come to an abrupt stop.The concept that most explains why is

Correct AnswerverifiedShow Answer

According to Newton's law of inertia,a railroad train in motion should continue going forever even if its engine is turned off.We never observe this because railroad trains

Correct AnswerverifiedShow Answer

Whirl a rock at the end of a string and it follows a circular path.If the string breaks,the tendency of the rock is to

Correct AnswerverifiedB

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

Correct AnswerverifiedShow Answer

Whereas Aristotle relied on logic in explaining nature,Galileo relied on

Correct AnswerverifiedShow Answer

If no external forces are acting on a moving object,it will

Correct AnswerverifiedShow Answer

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C

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A

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B

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