Quiz about Forces and Newton's Laws Final Review Physics

Question 1

What is Newton's First Law known as? The Law of

Accepted Answer

Inertia

Answer

Friction

Answer

Mass

Answer

Gravity

Question 2

What kind(s) of objects have inertia?

Accepted Answer

all objects with mass

Answer

only objects at rest

Answer

only objects in motion

Answer

only objects whose motion is being changed

Question 3

Which type of force(s) will cause a change in an object's motion?

Accepted Answer

unbalanced forces

Answer

gravity

Answer

zero net force

Answer

balanced forces

Question 4

An object in motion will stay in what kind of motion as long as the net forces acting on it are zero?

Accepted Answer

constant motion in a straight line

Answer

slowing motion in a straight line

Answer

accelerating motion in a straight line

Answer

constant motion in an unpredictable direction

Question 5

One object has twice as much mass as another object. The first object also has also twice as much...

Accepted Answer

inertia

Answer

velocity

Answer

gracitational acceleration

Answer

all of these

Question 6

Why does an 18-wheeler have more inertia than a bicycle?

Accepted Answer

it has more mass

Answer

it has more volume

Answer

it is not as aerodynamic

Question 7

The sum of all forces acting on an object and direction

Accepted Answer

Net Force

Answer

Contact Force

Answer

Balanced Force

Answer

Unbalanced Force

Question 8

Are forces balanced or unbalanced when a marble speeds up rolling down a ramp?

Accepted Answer

Unbalanced

Answer

Balanced

Question 9

What is the net force?

Accepted Answer

40 N right

Answer

40 N left

Answer

0 N Balalnced

Answer

400 N right

Question 10

What is the net force?

Accepted Answer

400 N Down

Answer

400 N Up

Answer

- 400 N Down

Answer

800 N Down

Question 11

What Unit do we measure Force in?

Accepted Answer

Newtons

Answer

Joules

Answer

Force

Answer

Don't know

Question 12

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

Accepted Answer

20N

Answer

40N

Answer

10N

Answer

70N

Question 13

Which has more Inertia?

Accepted Answer

Truck

Answer

Ant

Answer

A cat

Answer

A skateboard

Question 14

True of False?
An object's inertia is effected by its mass.

Accepted Answer

True

Answer

False

Question 15

What is inertia?

Accepted Answer

an object's tendency to stay in motion or to stay at rest

Answer

the force that opposes motion

Answer

the force of attraction between 2 objects

Answer

a change in an object's speed and/or direction

Question 16

What kind(s) of objects have inertia?

Accepted Answer

all objects with mass

Answer

only objects at rest

Answer

only objects in motion

Answer

only objects whose motion is being changed

Question 17

An object in motion will stay in what kind of motion as long as the net forces acting on it are zero?

Accepted Answer

constant motion in a straight line

Answer

slowing motion in a straight line

Answer

accelerating motion in a straight line

Answer

constant motion in an unpredictable direction

Question 18

What is Newton's First Law

Accepted Answer

An object at rest stays at rest, an object in motion stays in motion.

Answer

F=ma

Answer

Every action has an equal and opposite reaction

Answer

Friction

Question 19

After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals

Accepted Answer

zero, since no force is requires to keep it moving.

Answer

twice the force with which it was fired

Answer

the same amount of force with which it was fired

Answer

1/2 the force with which it was fired

Question 20

45 m/s² is the...

Accepted Answer

Acceleration

Answer

Mass

Answer

Force

Answer

weight

Question 21

If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  (F=ma)

Accepted Answer

The one with a mass of .52 kg will have the greatest acceleration.

Answer

The one with a mass of .78 kg will have the greatest acceleration.

Answer

They will both accelerate at the same rate.

Question 22

Forces always act in equal and opposite pairs.

Accepted Answer

Newton's 3rd Law

Answer

Newton's 1st Law

Answer

Newton's second law

Question 23

Unit of mass

Accepted Answer

kg

Answer

m/s 2

Answer

m/s

Answer

newtons

Question 24

What is the acceleration of a 50 kg object pushed with a force of 500 newtons? The answer to this question is most likely (HINT: Look at the units!!!) -

Accepted Answer

10 m/s2

Answer

10 N

Answer

10 kg

Question 25

A 50 kg skater pushed by a friend accelerates 5 m/s². How much force did the friend apply? The answer to this question is most likely (HINT: Look at the units!!!) -

Accepted Answer

250 N

Answer

250 m/s2

Answer

250 kg

Question 26

The mass of a car is 1000 kg. How much force would be required to accelerate the car at a rate of 3 m/s²? The answer to this question is most likely (HINT: Look at the units!!!) -

Accepted Answer

3000 N

Answer

3000 m/s2

Answer

3000 kg

Question 27

A force of 250 N is applied to an object that accelerates at a rate of 5 m/s². What is the mass of the object? The answer to this question is most likely (HINT: Look at the units!!!) -

Accepted Answer

50 kg

Answer

50 N

Answer

50 m/s2

Question 28

A 5 kg block is pulled across a table by a net force of 32 N. Calculate the acceleration of the object. The answer to this question is most likely (HINT: Look at the units!!!) -

Accepted Answer

6.4 m/s2

Answer

6.4 N

Answer

6.4 kg

Question 29

A skier needs to apply a force of 132 N to accelerate at a rate of 2 m/s². What is the mass of the skier? The answer to this question is most likely (HINT: Look at the units!!!) -

Accepted Answer

66 kg

Answer

66 N

Answer

66 m/s2

Question 30

What is the force on a 1000 kg elevator that is falling freely at 9.8 m/s²? The answer to this question is most likely (HINT: Look at the units!!!) -

Accepted Answer

9,800 N

Answer

9,800 m/s²

Answer

9,800 kg

Question 31

If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  (F=ma)

Accepted Answer

The one with a mass of .52 kg will have the greatest acceleration.

Answer

The one with a mass of .78 kg will have the greatest acceleration.

Answer

They will both accelerate at the same rate.

Question 32

A 20 kg bike accelerates at 10 m/s². what was the force?

Accepted Answer

200 Newtons

Answer

25 Newtons

Answer

20 Newtons

Answer

10 Newtons

Question 33

Unit of mass

Accepted Answer

kg

Answer

m/s 2

Answer

m/s

Answer

newtons

Question 34

A skier needs to apply a force of 132 N to accelerate at a rate of 2 m/s². What is the mass of the skier? The answer to this question is most likely (HINT: Look at the units!!!) -

Accepted Answer

66 kg

Answer

66 N

Answer

66 m/s2

Question 35

A force of 90N is applied to each cart below, which one will accelerate the fastest?

Accepted Answer

Cart 1

Answer

Cart 2

Answer

Cart 3

Answer

Cart 4

Question 36

Mass = 10 kg. a = 10 ms². Calculate the force.

Accepted Answer

100N

Answer

10N

Answer

1 N

Answer

1000N

Question 37

Mass = 4 kg and a = 0.2 ms². Calculate the force.

Accepted Answer

0.8N

Answer

8N

Answer

80 N

Answer

2 N

Question 38

Force = 20 N and Mass = 4 kg. Calculate the acceleration.

Accepted Answer

5 ms-2

Answer

80 N

Answer

80 ms-2

Answer

0.2 ms-2

Question 39

Why does a car accelerate faster with just the driver, compared to driver + 3 passengers?

Accepted Answer

Car and driver has less mass than car, driver + 3 passengers

Answer

Car and driver has more mass than car, driver + 3 passengers

Answer

Car has less friction (drag)

Answer

Car is accelerating faster

Question 40

F=ma. If force is kept the same but the mass is doubled, then the acceleration will....

Accepted Answer

be halved

Answer

stay the same

Answer

be doubled

Answer

be zero

Question 41

What is a force?

Accepted Answer

a push or a pull

Answer

something that always causes motion

Answer

a type of acceleration

Answer

a current

Question 42

If the person is pushing backwards with the paddle, why do they move forward?

Accepted Answer

The water pushes back with an equal and opposite force

Answer

The person will actually move backwards, they need to paddle the other way

Answer

The person is pushing harder than the water

Answer

The water pushes back with a greater force than the person

Question 43

If a person pushes down on a trampoline, why do they move back up into the air?

Accepted Answer

The trampoline pushes back with an equal and opposite force as the person

Answer

The trampoline pushes back with a greater force than the person

Answer

The trampoline pushes back with less force than the person

Question 44

How is this an example of Newton's 3rd Law?

Accepted Answer

Both the ball and the head are exerting equal force on each other

Answer

Only his head is pushing on the ball

Answer

Only the ball is pushing on his head

Question 45

When the person pushes on the wall, and the wall pushes back, why does the person move and not the wall?

Accepted Answer

The wall has more mass

Answer

The person is pushing harder than the wall

Answer

The wall is pushing harder than the person

Answer

The skateboard is pushing on the person

Question 46

When a small car pushes a big truck, the truck applies an equal and opposite force on the car.

Accepted Answer

True

Answer

False

Question 47

A book rests on a table. The force of gravity pulls down on the book with a force of 20N. What prevents the book from falling down into the ground?

Accepted Answer

The table pushes back up on the book with an equal and opposite force of 20N

Answer

The table and the book are pushing back with an acceleration of 9.8m/s².

Answer

The table pushes back up on the book with a force greater than 20N

Answer

The inertia of the book is equal to the inertia of gravity

Question 48

A bus hits a bug and the bug splatters on the windshield, which force is greater?

Accepted Answer

They're the same

Answer

The Bus

Answer

The Bug

Answer

Gravity acting on the bus

Question 49

When Ronda Rousey got kicked in the face, what are the action and reaction forces?

Accepted Answer

The foot pushing on face and face pushing on foot

Answer

Ronda Rousey and media criticism

Answer

The foot pushing on the air and air on foot

Answer

Ronda Rousey pushing on the floor and floor on Rhonda Rousey

Question 50

Newton's 3rd law says that for every action, there is an ______ reaction.

Accepted Answer

equal & opposite

Answer

unequal & opposite

Answer

equal & similar

Answer

stronger & opposite

Question 51

When a small car pushes a big truck, the truck applies an equal and opposite force on the car.

Accepted Answer

True

Answer

False

Question 52

When a cannon fires a cannonball, we can observe Newton's 3rd Law. Which is the reaction force?

Accepted Answer

The cannon moving backward

Answer

The cannon moving forward

Answer

The cannonball moving backward

Answer

The cannonball moving forward

Question 53

When a person pushes against the ground with their foot, the equal and opposite reaction force is

Accepted Answer

the ground pushing back on their foot

Answer

when they start to move forward

Question 54

A person steps out of the boat and onto the dock. As the person moves forward onto the dock, the boat moves backward. Which statement best describes the backward motion of the boat as the person steps forward?

Accepted Answer

For every action there is an equal and opposite reaction.

Answer

Every mass exerts a force on every other mass.

Answer

An object at rest tends to stay at rest.

Answer

Friction opposes the motion of an object.

Question 55

When a heavy football player and a light football player run into each other, who exerts more force?

Accepted Answer

They both exert an equal amount of force

Answer

The heavy one

Answer

The light one

Question 56

What will happen to the balloon if it is released?

Accepted Answer

The balloon will move to the right

Answer

The balloon will go up

Answer

The balloon will go down

Answer

The balloon will move to the left

Question 57

What is the action in the picture?

Accepted Answer

The man pushing against the wall

Answer

The wall pushing back at the man

Answer

The ground pushing against the man's foot

Question 58

Forces always come in __________.

Accepted Answer

Pairs

Answer

Triplets

Answer

Waves

Question 59

Action-reaction forces can cause a change in motion.

Accepted Answer

True

Answer

False

Question 60

How is this an example of Newton's 3rd Law?

Accepted Answer

Both the ball and the head are exerting equal force on each other

Answer

Only the head is pushing on the ball

Answer

Only the ball is using the head

Question 61

Action-reaction forces never cancel each other out because....

Accepted Answer

they act on different objects

Answer

they act on the same object

Answer

they do not act on objects

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