Question 1

An acceleration is evidence of ______________.

Accepted Answer

an unbalan

Question 2

It is generally easier to push an object once it is moving than when you are getting it started.This is because

Accepted Answer

A)  sliding friction is zero. 
B)  sliding friction is less than static friction. 
C)  static friction is less than sliding friction. 
D)  static friction is zero. 
A)  sliding friction is zero. 
B)  sliding friction is less than static friction. 
C)  static friction is less than sliding friction. 
D)  static friction is zero.

Question 3

The constant G that appears in the equation F = Gm1m2/r2 is

Accepted Answer

A)  smaller on the Moon than on Earth. 
B)  the force of gravity. 
C)  equal to 9.8 m/s2. 
D)  the acceleration due to gravity. 
E)  equal to 6.67 x 10-11 Nm2/kg2. 
A)  smaller on the Moon than on Earth. 
B)  the force of gravity. 
C)  equal to 9.8 m/s2. 
D)  the acceleration due to gravity. 
E)  equal to 6.67 x 10-11 Nm2/kg2.

Question 4

The linear momentum of an object is conserved if there are no ______________ forces acting on it.

Accepted Answer

The answer of The linear momentum of an object is...

Question 5

Newton's third law of motion states that the force pair acting on different objects consists of two forces that

Accepted Answer

A)  are under the influence of gravity. 
B)  are equal and in the same direction. 
C)  always produce an acceleration. 
D)  are equal and in opposite directions. 
A)  are under the influence of gravity. 
B)  are equal and in the same direction. 
C)  always produce an acceleration. 
D)  are equal and in opposite directions.

Question 6

In keeping with Newton's second law of motion,if the force acting on a moving object is doubled,then its ______________ is doubled.

Accepted Answer

The answer of In keeping with Newton's second law of...

Question 7

On which planet (other than Earth)have air bags been deployed?

Accepted Answer

A)  Venus 
B)  Mars 
C)  Mercury 
D)  Saturn 
A)  Venus 
B)  Mars 
C)  Mercury 
D)  Saturn

Question 8

Linear momentum is the product of mass times ______________.

Accepted Answer

The answer of Linear momentum is the product of mass...

Question 9

Newton's third law force pair acts on ______________ objects.

Accepted Answer

The answer of Newton's third law force pair acts on...

Question 10

When you push on a stationary object and it doesn't move,what kind of force is most likely to be opposing your efforts?

Accepted Answer

The answer of When you push on a stationary object...

Question 11

The quantity mvr is an object's

Accepted Answer

A)  inertia. 
B)  torque. 
C)  linear momentum. 
D)  angular momentum. 
A)  inertia. 
B)  torque. 
C)  linear momentum. 
D)  angular momentum.

Question 12

______________ principle explains why objects float or sink in a fluid.

Accepted Answer

A)  Newton's 
B)  Pascal's 
C)  Bernoulli's 
D)  Archimedes' 
A)  Newton's 
B)  Pascal's 
C)  Bernoulli's 
D)  Archimedes'

Question 13

The speed of a comet in its orbit around the Sun is ______________ when its distance from the Sun is greatest (aphelion).

Accepted Answer

A)  zero 
B)  reversed 
C)  greatest 
D)  least 
A)  zero 
B)  reversed 
C)  greatest 
D)  least

Question 14

Which of the following would be the same for a person on the Moon rather than on Earth?

Accepted Answer

A)  Maximum jumping height 
B)  Weight 
C)  The amount of time for an object to fall 2 meters from rest 
D)  Mass 
E)  Gravitational acceleration 
A)  Maximum jumping height 
B)  Weight 
C)  The amount of time for an object to fall 2 meters from rest 
D)  Mass 
E)  Gravitational acceleration

Question 15

Linear momentum has units of ______________.

Accepted Answer

The answer of Linear momentum has units of ______________....

Question 16

A comet is traveling at a speed of 50,000 mi/h when it is 100 million miles from the Sun.Compute its speed when it is 25 million miles from the Sun.

Accepted Answer

The answer of A comet is traveling at a speed...

Question 17

If the lever arm of a 9-N force is 6 m,what is the torque acting on the object due to this force?

Accepted Answer

A)  54 Nm 
B)  1.5 Nm 
C)  0.67 Nm 
D)  15 Nm 
E)  cannot be determined 
A)  54 Nm 
B)  1.5 Nm 
C)  0.67 Nm 
D)  15 Nm 
E)  cannot be determined

Question 18

To initiate motion,a(n)______________ force is necessary.

Accepted Answer

The answer of To initiate motion,a(n)______________ force is necessary....

Question 19

In the equation A = B/C,the A and B are said to be _______________ proportional.

Accepted Answer

A)  directly 
B)  inversely 
C)  not 
D)  exactly 
A)  directly 
B)  inversely 
C)  not 
D)  exactly

Question 20

The angular momentum of a body is constant if the

Accepted Answer

A)  net torque is zero. 
B)  net force is constant. 
C)  net torque is constant. 
D)  net force is zero. 
A)  net torque is zero. 
B)  net force is constant. 
C)  net torque is constant. 
D)  net force is zero.

Exam 3: Force and Motion

An acceleration is evidence of ______________.

It is generally easier to push an object once it is moving than when you are getting it started.This is because

The constant G that appears in the equation F = Gm1m2/r2 is

The linear momentum of an object is conserved if there are no ______________ forces acting on it.

Newton's third law of motion states that the force pair acting on different objects consists of two forces that

In keeping with Newton's second law of motion,if the force acting on a moving object is doubled,then its ______________ is doubled.

On which planet (other than Earth)have air bags been deployed?

Linear momentum is the product of mass times ______________.

Newton's third law force pair acts on ______________ objects.

When you push on a stationary object and it doesn't move,what kind of force is most likely to be opposing your efforts?

The quantity mvr is an object's

______________ principle explains why objects float or sink in a fluid.

The speed of a comet in its orbit around the Sun is ______________ when its distance from the Sun is greatest (aphelion).

Which of the following would be the same for a person on the Moon rather than on Earth?

Linear momentum has units of ______________.

A comet is traveling at a speed of 50,000 mi/h when it is 100 million miles from the Sun.Compute its speed when it is 25 million miles from the Sun.

If the lever arm of a 9-N force is 6 m,what is the torque acting on the object due to this force?

To initiate motion,a(n)______________ force is necessary.

In the equation A = B/C,the A and B are said to be _______________ proportional.

The angular momentum of a body is constant if the

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The constant G that appears in the equation F = Gm₁m₂/r² is