Question 1

Lift an object against the force of gravity if you want to judge its

Accepted Answer

A)  mass.
B)  weight.
C)  both the same
D)  none of the aboveE) B) and C)
F) A) and D)

Question 2

A probe in space continues in its motion due to

Accepted Answer

A)  very low friction.
B)  its own inertia.
C)  it seeking a continued state of motion.
D)  none of the aboveE) C) and D)
F) None of the above

Question 3

Distinguish between the concepts of velocity and acceleration,using a bowling ball's behavior as an example for each.

Accepted Answer

Velocity is a measure of how fast someth...

Question 4

An object is pulled with three forces: one at 20 N to the right,another at 40 N to the right,and the third at 30 N to the left.The net force is

Accepted Answer

A)  60 N to the right.
B)  60 N to the left.
C)  30 N to the left.
D)  none of the aboveE) C) and D)
F) All of the above

Question 5

Acceleration and velocity are

Accepted Answer

A)  different names for the same idea.
B)  very different from each other.
C)  concepts developed by Aristotle.
D)  none of the aboveE) B) and D)
F) A) and B)

Question 6

What did Galileo incorporate in his study of motion that Aristotle overlooked?

Accepted Answer

A)  the role of distance
B)  the role of time
C)  the role of space
D)  none of the aboveE) C) and D)
F) A) and B)

Question 7

A 10-N falling object encounters 4 N of air resistance.The net force on it is

Accepted Answer

A)  0 N.
B)  4 N.
C)  6 N.
D)  10 N.E) B) and C)
F) All of the above

Question 8

A freely-falling object has a speed of 30 m/s at one instant.Exactly 2 seconds later its speed will be

Accepted Answer

A)  the same.
B)  40 m/s.
C)  50 m/s.
D)  more than 50 m/s.E) None of the above
F) A) and C) C

Question 9

A 10-N falling object encounters 10 N of air resistance.The net force on it is

Accepted Answer

A)  0 N.
B)  4 N.
C)  6 N.
D)  10 N.E) A) and B)
F) All of the above A

Question 10

The amount of friction that occurs when two blocks slide against each other depends on

Accepted Answer

A)  how much they are pressed together.
B)  the "stickiness" of atoms on their surfaces.
C)  the kinds of material being pressed.
D)  all of the aboveE) None of the above
F) B) and C)

Question 11

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.E) B) and D)
F) B) and C)

Question 12

As an object freely falls,its

Accepted Answer

A)  velocity increases.
B)  acceleration increases.
C)  both of these
D)  none of the aboveE) All of the above
F) A) and D)

Question 13

When Jean hikes a distance of 1 km in a time of one-half hour her average speed is

Accepted Answer

A)  nearly 1 km/h.
B)  1 km/h.
C)  slightly more than 1 km/h.
D)  2 km/h.E) A) and B)
F) B) and D)

Question 14

Aristotle believed that natural laws could be understood by

Accepted Answer

A)  experiment.
B)  logic.
C)  patterns.
D)  mathematics.E) A) and D)
F) None of the above B

Question 15

What is the difference between speed,velocity,and instantaneous velocity? Give examples of each.

Accepted Answer

All describe motion,speed being the simp...

Question 16

If you toss a ball straight upward at 40 m/s with no air resistance,6 seconds later its speed is

Accepted Answer

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

Question 17

When the bottom string is pulled slowly in the heavy-ball-and-strings demonstration (Figure 1.7 in your text) ,tension

Accepted Answer

A)  in the top string is due to your pull plus the weight of the ball.
B)  is about the same in both strings.
C)  in the bottom string is zero.
D)  none of the aboveE) A) and C)
F) C) and D)

Question 18

The force of friction on a sliding object is 50 N.The applied force needed to maintain a constant velocity is

Accepted Answer

A)  more than 50 N.
B)  less than 50 N.
C)  50 N.D) A) and C)
E) A) and B)

Question 19

Phil Physiker standing at the edge of a cliff throws one ball straight up and another ball straight down,both with the same speed.Both balls hit the ground at

Accepted Answer

A)  different speeds.
B)  the same speed in the same time.
C)  the same speed in different times.
D)  none of the aboveE) A) and D)
F) C) and D)

Question 20

An object travels 8 m in the 1st second of travel,8 m again during the 2nd second of travel,and 8 m again during the 3rd second.Its acceleration is

Accepted Answer

A)  0 m/s2.
B)  5 m/s2.
C)  8 m/s2.
D)  10 m/s2.
E)  more than 10 m/s2.F) B) and D)
G) A) and D)

Exam 1: Patterns of Motion and Equilibrium

Lift an object against the force of gravity if you want to judge its

Correct AnswerverifiedShow Answer

A probe in space continues in its motion due to

Correct AnswerverifiedShow Answer

Distinguish between the concepts of velocity and acceleration,using a bowling ball's behavior as an example for each.

Correct AnswerverifiedVelocity is a measure of how fast someth...View AnswerShow Answer

An object is pulled with three forces: one at 20 N to the right,another at 40 N to the right,and the third at 30 N to the left.The net force is

Correct AnswerverifiedShow Answer

Acceleration and velocity are

Correct AnswerverifiedShow Answer

What did Galileo incorporate in his study of motion that Aristotle overlooked?

Correct AnswerverifiedShow Answer

A 10-N falling object encounters 4 N of air resistance.The net force on it is

Correct AnswerverifiedShow Answer

A freely-falling object has a speed of 30 m/s at one instant.Exactly 2 seconds later its speed will be

Correct AnswerverifiedC

A 10-N falling object encounters 10 N of air resistance.The net force on it is

Correct AnswerverifiedA

The amount of friction that occurs when two blocks slide against each other depends on

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

As an object freely falls,its

Correct AnswerverifiedShow Answer

When Jean hikes a distance of 1 km in a time of one-half hour her average speed is

Correct AnswerverifiedShow Answer

Aristotle believed that natural laws could be understood by

Correct AnswerverifiedB

What is the difference between speed,velocity,and instantaneous velocity? Give examples of each.

Correct AnswerverifiedAll describe motion,speed being the simp...View AnswerShow Answer

If you toss a ball straight upward at 40 m/s with no air resistance,6 seconds later its speed is

Correct AnswerverifiedShow Answer

When the bottom string is pulled slowly in the heavy-ball-and-strings demonstration (Figure 1.7 in your text) ,tension

Correct AnswerverifiedShow Answer

The force of friction on a sliding object is 50 N.The applied force needed to maintain a constant velocity is

Correct AnswerverifiedShow Answer

Phil Physiker standing at the edge of a cliff throws one ball straight up and another ball straight down,both with the same speed.Both balls hit the ground at

Correct AnswerverifiedShow Answer

An object travels 8 m in the 1st second of travel,8 m again during the 2nd second of travel,and 8 m again during the 3rd second.Its acceleration is

Correct AnswerverifiedShow Answer

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Velocity is a measure of how fast someth...
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C

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A

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B

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All describe motion,speed being the simp...
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