Question 1

The newton is a unit of

Accepted Answer

A)  motion.
B)  energy.
C)  power.
D)  force.E) None of the above
F) A) and B)

Question 2

A 250-g ball travels at a velocity of 40 m/s.Its momentum is

Accepted Answer

A)  4 kg·m/s.
B)  10 kg·m/s.
C)  160 kg·m/s.
D)  10,000 kg·m/s.E) C) and D)
F) A) and D)

Question 3

Ignoring air resistance, the velocity of a falling object

Accepted Answer

A)  is constant.
B)  is constantly increasing.
C)  increases for a while, then becomes constant.
D)  depends on the mass of the object.E) B) and C)
F) A) and B)

Question 4

A heavy object and a light object are dropped from rest at the same time in a vacuum.The heavier object will reach the ground

Accepted Answer

A)  before the lighter object.
B)  at the same time as the lighter object.
C)  after the lighter object.
D)  It depends on the shape of the object.E) None of the above
F) B) and C) B

Question 5

If an unbalanced force applied to an object doubles, then

Accepted Answer

A)  its velocity doubles.
B)  its acceleration doubles.
C)  its acceleration is cut in half.
D)  its acceleration increases by a factor of four.E) B) and D)
F) None of the above

Question 6

Astronauts experience a weightless condition when they are in orbit.

Accepted Answer

A) True 
 B)False

Question 7

Everything that happens in the universe can be traced to interactions of

Accepted Answer

A)  matter and gravity.
B)  light and matter.
C)  four fundamental forces.
D)  gravity waves and light.E) A) and B)
F) C) and D)

Question 8

When you roll a ball across the floor, it comes to a stop because you are no longer exerting a force on it.

Accepted Answer

A) True 
 B)False

Question 9

A car traveling at 20 mph on a curved exit ramp has a constant velocity.

Accepted Answer

A) True 
 B)False  False

Question 10

The reason a moving object slows down is that its force of motion gradually runs out.

Accepted Answer

A) True 
 B)False

Question 11

The momentum of an object remains the same unless an unbalanced force acts on it.

Accepted Answer

A) True 
 B)False

Question 12

An object accelerates when it slows or its direction of movement changes.

Accepted Answer

A) True 
 B)False

Question 13

The weight of a 50-kg box is closest to

Accepted Answer

A)  5 N.
B)  50 N.
C)  500 N.
D)  5000 N.E) C) and D)
F) A) and B)

Question 14

Imagine an experiment in which a 8-lb bowling ball and a 10-lb bowling ball are dropped from the fifth floor at the same time.The heavier ball will reach the ground first.

Accepted Answer

A) True 
 B)False

Question 15

If you consider the total distance and total time for a trip, you are calculating a (an)

Accepted Answer

A)  instantaneous speed.
B)  constant speed.
C)  average speed.
D)  non-uniform speedE) B) and C)
F) A) and B)

Question 16

The force of gravity near the surface of Earth is 9.8 m/s2.

Accepted Answer

A) True 
 B)False

Question 17

In the equation  represents

Accepted Answer

A)  average speed.
B)  instantaneous speed.
C)  final speed.
D)  constant speed.E) B) and D)
F) All of the above

Question 18

The tendency of a moving object to remain in unchanging motion in the absence of an unbalanced force is called

Accepted Answer

A)  inertia.
B)  free fall.
C)  acceleration.
D)  impulse.E) A) and D)
F) None of the above A

Question 19

A block of iron is transported to the Moon.Which of the following is true?

Accepted Answer

A)  both its mass and weight remain unchanged.
B)  its mass decreases, but its weight remains the same.
C)  its mass remains the same, but its weight decreases.
D)  both its mass and weight decrease.E) A) and C)
F) B) and D)

Question 20

The pound is an English unit of measure; its SI counterpart is the

Accepted Answer

A)  newton.
B)  kilogram.
C)  joule.
D)  momentum.E) A) and C)
F) C) and D)

Exam 2: Motion

The newton is a unit of

Correct AnswerverifiedShow Answer

A 250-g ball travels at a velocity of 40 m/s.Its momentum is

Correct AnswerverifiedShow Answer

Ignoring air resistance, the velocity of a falling object

Correct AnswerverifiedShow Answer

A heavy object and a light object are dropped from rest at the same time in a vacuum.The heavier object will reach the ground

Correct AnswerverifiedB

If an unbalanced force applied to an object doubles, then

Correct AnswerverifiedShow Answer

Astronauts experience a weightless condition when they are in orbit.

Correct AnswerverifiedShow Answer

Everything that happens in the universe can be traced to interactions of

Correct AnswerverifiedShow Answer

When you roll a ball across the floor, it comes to a stop because you are no longer exerting a force on it.

Correct AnswerverifiedShow Answer

A car traveling at 20 mph on a curved exit ramp has a constant velocity.

Correct AnswerverifiedFalse

The reason a moving object slows down is that its force of motion gradually runs out.

Correct AnswerverifiedShow Answer

The momentum of an object remains the same unless an unbalanced force acts on it.

Correct AnswerverifiedShow Answer

An object accelerates when it slows or its direction of movement changes.

Correct AnswerverifiedShow Answer

The weight of a 50-kg box is closest to

Correct AnswerverifiedShow Answer

Imagine an experiment in which a 8-lb bowling ball and a 10-lb bowling ball are dropped from the fifth floor at the same time.The heavier ball will reach the ground first.

Correct AnswerverifiedShow Answer

If you consider the total distance and total time for a trip, you are calculating a (an)

Correct AnswerverifiedShow Answer

The force of gravity near the surface of Earth is 9.8 m/s2.

Correct AnswerverifiedShow Answer

In the equation represents

Correct AnswerverifiedShow Answer

The tendency of a moving object to remain in unchanging motion in the absence of an unbalanced force is called

Correct AnswerverifiedA

A block of iron is transported to the Moon.Which of the following is true?

Correct AnswerverifiedShow Answer

The pound is an English unit of measure; its SI counterpart is the

Correct AnswerverifiedShow Answer

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B

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False

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The force of gravity near the surface of Earth is 9.8 m/s².

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A

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