Chapter 11

Question 0

Weight is best described as

Answer 0

The down force exerted on objects due to gravity

Question 1

Which of the following is not factor in calculating momentum?

Answer 1

Acceleration

Question 2

Orbital motion is a combination of

Answer 2

Forward motion and free fall

Question 3

The weight of an object can be calculated by multiplying mass by

Answer 3

Free-fall acceleration

Question 4

A tug-of-war that results in one team pulling the other across the line is an example of

Answer 4

Unbalanced forces

Question 5

Which will result in the greatest acceleration?

Answer 5

56 N acting on a 1-KG box

Question 6

In the absence of air resistance,how would the acceleration of a 1.5 KG book the acceleration of a 15 KG rock differ if the objects were dropped from the same height?

Answer 6

They would not differ; they would be the same

Question 7

Which statement about weight is incorrect?

Answer 7

An object weighs more on the moon than it weighs on earth

Question 8

The strongest gravitational force occurs between earth and

Answer 8

The moon

Question 9

How does the total momentum of two objects before a collision compare with the total momentum after the collision?

Answer 9

It is the same

Question 10

The law that states that every object maintains constant velocity unless acted on by an unbalanced force is

Answer 10

Newton’s first law of motion

Question 11

Earth pulls on the moon and holds the moon in its orbit. The moon pulls on earth with an equal and opposite force. This is an example of

Answer 11

Newton’s third law

Question 12

If the net force on an object is zero then the object has

Answer 12

Balanced forces

Question 13

A force is continuously applied to an object, causing it to accelerate. After a period of time, however, the object stops accelerating. What conclusions can be drawn?

Answer 13

The object is experiencing some kind of friction

Question 14

Which of the following objects exerts a gravitational force?

Answer 14

All of these

Question 15

Increasing which of these conditions results in more gravitational force between two objects?

Answer 15

Mass

Question 16

Which object does not have momentum?

Answer 16

A rock by the side of the road

Question 17

Which of the following equations is correct?

Answer 17

W=mg

Question 18

When the velocity of an object changes, it is acted upon by a

Answer 18

Force

Question 19

The gravitational force between two objects depends on masses of objects and

Answer 19

Distance between objects

Question 20

Which statement illustrates Newton’s first law

Answer 20

All of these

Question 21

The tendency of an object at rest to remain at rest is

Answer 21

Inertia

Question 22

One newton is the force that can give a mass of 1KG an acceleration of

Answer 22

1m/s2

Question 23

An objects momentum is determined by the objects

Answer 23

Mass and velocity

Question 24

If an equal force is applied to two cars of equal mass, car A and car B, car A will have _________ acceleration as car B

Answer 24

The same

Question 25

The law that states that the unbalanced force acting on an object equals the objects mass times it's acceleration is

Answer 25

Newton's second law of motion

Question 26

Near earths surface,an objects free-fall acceleration increases as it's

Answer 26

None of these

Question 27

Jen a moving bowling ball hits a pin, some of the balls momentum

Answer 27

Is transferred to the pin

Question 28

Which of the filling has a momentum of zero?

Answer 28

A newspaper lying on a table

Question 29

If two objects with different masses and traveling with different velocities collide, what law allows you to predict the motion of the objects after the collision?

Answer 29

The law of conservation of momentum

Question 30

The law that states that for every action force there is an equal and opposite reaction force is

Answer 30

Newton's third law of motion

Question 31

Which object has the greatest inertia?

Answer 31

A bowling ball

Question 32

A seat belt helps you when your car stops suddenly by providing a

Answer 32

Unbalanced rearward force

Question 33

Free-fall acceleration near earths surface

Answer 33

Is the same for all objects

Question 34

What force causes a skater sliding on the ice to gradually slow down?

Answer 34

Friction

Question 35

Astronauts "float" when inside an orbiting spaceship because they are

Answer 35

In free fall

Question 36

Which is an example of projectile motion?

Answer 36

A dart thrown at a dart board

Question 37

Whenever a force is exerted, another force occurs that is ___ in size,and ___ in direction

Answer 37

Equal,opposite

Question 38

Two identical cars are traveling with equal speeds. One is going north and the other south. They collide head-on and stick together. How will the cars react after the collision

Answer 38

Both cars will stop

Question 39

What is the unbalanced force that slows down a ball rolling across the floor?

Answer 39

The force of friction

Question 40

The SI unit of force, named for the scientist who described the relationship between motion and force, is called the

Answer 40

Newton

Question 41

If you divide momentum by velocity, the result is the value if the objects

Answer 41

Mass

Question 42

Whenever an object is standing still, the value that is/are always zero is/are

Answer 42

All of these

Question 43

When an object is in free fall, the only force acting on it is

Answer 43

Gravity

Question 44

What happens immediately after a skydiver opens her parachute?

Answer 44

Air resistance greatly increases

Question 45

A 10.0 KG dog chasing a rabbit north at 6.0 m/s has a momentum of

Answer 45

60.0 KG• m/s north

Question 46

When gravitational forces and air resistance equalize on an object that is falling toward earth and the object stops accelerating, what is the velocity if an object called?

Answer 46

Terminal velocity

Question 47

The force exerted in the racket by a hut tennis ball is the

Answer 47

Reaction force

Question 48

When objects are moved further apart from each other, the force of gravity

Answer 48

Decreases

Question 49

A force of 240.0 N causes an object to accelerate at 3.2 m/s2. What is the mass of the object?

Answer 49

75 KG