Quiz about Newtons Three Laws

Question 1

The combined force of all forces acting on an object is the  ___ force.

Accepted Answer

net

Answer

big

Answer

bad

Answer

use

Question 2

Newton's second law is applied as the formula _____

Accepted Answer

Force = Mass X Acceleration

Answer

Speed = distance / time

Answer

a + b = c

Answer

huh?

Question 3

____ is the rubbing force that acts against motion between two touching surfaces.

Accepted Answer

Friction

Answer

Acceleration

Answer

Normal force

Answer

Momentum

Question 4

Forces always act in equal and opposite pairs.

Accepted Answer

Newton's 3rd Law

Answer

Newton's 1st Law

Question 5

If there is a big mass, it would need a stronger force to accelerate it.  Which law does this describe?

Accepted Answer

Newton's 2nd Law

Answer

Newton's 1st Law

Answer

Newton's 3rd Law

Question 6

According to Newton's Third Law, if someone jumps off a skateboard, the skateboard will roll backwards because

Accepted Answer

the force sent the person forward, there is an equal force pushing back on the skateboard

Answer

the pull of gravity on the person is the same as on the skateboard, regardless of size

Answer

the air resistane on the person is great and the friction on the skateboard is small

Answer

the mass of the skateboard is the same as the mass of the person jumping off

Question 7

When you step on a Lego. You push on the Lego and the Lego pushes back on you.

Accepted Answer

Newton's 3rd Law

Answer

Newton's 1st Law

Answer

Newton's 2nd Law

Question 8

Question 8.

Accepted Answer

2nd

Answer

1st

Answer

3rd

Question 9

Question 9.

Accepted Answer

3rd

Answer

1st

Answer

2nd

Question 10

F = MxA

Accepted Answer

2nd

Answer

1st

Answer

3rd

Question 11

Which has more Inertia? (so need more force to move)

Accepted Answer

Truck

Answer

Ant

Answer

A cat

Answer

A skateboard

Question 12

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

Accepted Answer

200 N

Answer

25

Answer

20 N

Answer

10 N

Question 13

What i the equation for speed?

Accepted Answer

Speed = Distance / Time

Answer

Speed = Time / Distance

Answer

Force = Mass x Acceleration

Answer

F=ma

Question 14

The tendency of an object to resist a change in motion.

Accepted Answer

Inertia

Answer

Momentum

Answer

Motion

Answer

Mass

Question 15

Who is the scientist that came up with the laws of motion and the law of gravity?

Accepted Answer

Sir Isaac Newton

Answer

Sir Isaac Netonian

Answer

Albert Einstein

Answer

Alexandar Bell

Question 16

The amount of matter in an object.

Accepted Answer

mass

Answer

Volume

Answer

inertia

Answer

Distance

Question 17

A measure of how hard it is to stop an object and it depends on the objects mass & velocity.

Accepted Answer

Momentum

Answer

Velocity

Answer

Mass

Answer

Motion

Question 18

The picture of the position vs. time graph shows an object that is...

Accepted Answer

accelerating/speeding up

Answer

moving at a constant speed

Answer

not moving

Answer

accelerating/slowing down.

Question 19

When Forces are balanced, do objects stay at rest?

Accepted Answer

Yes

Answer

No

Answer

Obama

Answer

Maybe

Question 20

When forced are unbalanced, do objects stay in motion?

Accepted Answer

No

Answer

Yes

Answer

Fortnite

Answer

Maybe

Question 21

When Forces are unbalanced, is the acceleration dependent on the Net Force or the Mass of the Object?

Accepted Answer

Both

Answer

Mass of the Object

Answer

The Net Force

Answer

Neither

Question 22

When forces are balanced, does the ball accelerate because of it being balanced?

Accepted Answer

No

Answer

Yes

Answer

Obama

Answer

Maybe

Question 23

For every action there is an equal an opposite reaction.

Accepted Answer

Newton's Third Law

Answer

Newton's First Law

Answer

Newton's Second Law

Answer

Obama :)

Question 24

When you move the Cradle, which Law counts into the motion of the Balls?

Accepted Answer

All of the Laws

Answer

First Law

Answer

Second Law

Answer

Third Law

Question 25

According to Newtons first law of motion, an object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force. What is this law often called?

Accepted Answer

law of inertia

Answer

law of force

Answer

law of rest

Answer

law of balance

Question 26

What does the first law of motion mean?

Accepted Answer

there is a natural tendency of objects to keep on doing what they're doing.

Answer

all objects will change no matter what they're doing

Answer

force causes objects to resist change in motion

Question 27

In the absence of a (an)________________ force, an object in motion will maintain this state of motion.

Accepted Answer

unbalanced

Answer

balanced

Question 28

According to Newton's second law, _______________ is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).

Accepted Answer

acceleration

Answer

motion

Answer

force

Question 29

Which of the following mathematical equations expresses Newton's second law of motion?

Accepted Answer

Force = Mass x Acceleration

Answer

Mass + Force = Acceleration

Answer

Mass = Force x Acceleration

Answer

none of the above

Question 30

True or False? The third law of motion states that for every action there is an equal and opposite re-action.

Accepted Answer

True

Answer

False

Question 31

What does the third law of motion mean?

Accepted Answer

whenever an object pushes another object it gets pushed back in the opposite direction equally hard.

Answer

force will always move a heavier object faster than a lighter object

Question 32

Which law explains why we need to wear seat belts?

Accepted Answer

first law of motion

Answer

second law of motion

Answer

third law of motion

Question 33

Which law explains how rockets are launched into space?

Accepted Answer

third law of motion

Answer

first law of motion

Answer

second law of motion

Answer

none of the above

Question 34

The diagram below represents two tug-of-war teams pulling on a rope and the forces for this situation. Group A applies a force of 420 N, and group B applies a force of 380 N.

Accepted Answer

40 N to the left

Answer

40 N to the right

Answer

800 N upward

Answer

800 N downward

Question 35

Which of the following describes a vehicle moving at a constant velocity?

Accepted Answer

A truck travels north at 70 km/hr on a straight road.

Answer

A go-cart races at 50 km/hr around a circular track.

Answer

A bicycle slows down as it approaches an intersection.

Answer

A car steadily speeds up after a traffic light turns green.

Question 36

The free-body force diagram below represents two forces, F1 and F2, acting on a hot air balloon as it rises through the air. If the net force acting on the balloon is 120 N upward, what is the magnitude of F2?

Accepted Answer

980 N

Answer

1100 N

Answer

1200 N

Answer

1220 N

Question 37

The free-body force diagram below represents four forces acting on an object. What is the net force on the object?

Accepted Answer

2 N to the right

Answer

0 N

Answer

6 N along the vertical axis

Answer

18 N in all directions

Question 38

What is the net force that acts on a 5 kg object accelerating at 2 m/s2?

Accepted Answer

10 N

Answer

2.5 N

Answer

5 N

Answer

50 N

Question 39

The diagram below shows the top view of two carts with different masses on a frictionless surface.

The carts are pushed from rest, and they reach the finish line at the same time. Which of the following statements describes and explains the forces applied to the carts?

Accepted Answer

A greater force is applied to cart Z because it accelerates at the same rate as cart Y but has more mass.

Answer

Equal force is required to push the carts because they move on a frictionless surface.

Answer

Equal force is required to push the carts because they reach the finish line at the same time.

Answer

A greater force is applied to cart Y because it accelerates at the same rate as cart Z but has less mass.

Question 40

A free-body diagram is shown below.

What is the net force acting on this object?

Accepted Answer

6 N right

Answer

4 N right

Answer

6 N left

Answer

10 N right

Question 41

A toy truck powered by a battery is accelerating to the right. A string with negligible mass is attached to the truck. The diagram below shows the forces acting on the truck.

If a child pulls the string to the left, what force must the child exert to make the toy truck move to the right at a constant velocity?

Accepted Answer

2.5 N

Answer

1.0 N

Answer

1.5 N

Answer

6 N

Question 42

A toy truck powered by a battery is accelerating to the right. A string with negligible mass is attached to the truck. The diagram below shows the forces acting on the truck.

If a child pulls the string to the left, what force must the child exert to make the toy truck move to the right at a constant velocity?

Accepted Answer

2.5 N

Answer

1.0 N

Answer

1.5 N

Answer

6 N

Question 43

Which of the following is an example of an object that could have a net force greater than zero acting on it?

Accepted Answer

a ball rolling down a ramp

Answer

a glass resting on a table

Answer

a ladder leaning against a wall

Answer

a toy car moving east at a constant velocity

Question 44

A rope is attached to a block that has a weight of 120 N. When the rope exerts an upward force of 250 N on the block, what is the net force on the block?

Accepted Answer

130 N up

Answer

370 N up

Answer

130 N down

Answer

370 N down

Question 45

The diagram below represents a block sliding across a table at a constant speed. All forces are shown except the frictional force.

Accepted Answer

1.7 N

Answer

0.8 N

Answer

1.6 N

Answer

2.5 N

Question 46

A worker in a warehouse pushes two wooden boxes across a floor at a constant speed, as shown in the diagram below.

The arrow in the diagram represents the force box 1 exerts on box 2. In which direction does the reaction force point?

Accepted Answer

Left

Answer

Right

Answer

Up

Answer

Down

Question 47

If you blow up a balloon, and then release it, the balloon will fly away. This is an illustration of...

Accepted Answer

Newton's third law

Answer

Newton's first law

Answer

Newton's second law

Answer

Galileo's law of inertia

Question 48

Which of the follow examples are not explained by Newton's first law of motion acting on a single object respectfully?

Accepted Answer

Dropping a box causes it to accelerate downwards.

Answer

If I'm riding a skateboard, it doesn't spontaneously reverse direction.

Answer

A ball rolling straight down tilted plane hill won't ever veer left or right unless something pushes it.

Answer

A book lying on a desk doesn't start moving without an external force.

Question 49

What net force is required to keep a 500 kg object moving with a constant velocity. of 10 m/s ?

Accepted Answer

0 N

Answer

500 N

Answer

50 N

Answer

10 N

Question 50

What force pulls an object to the ground?

Accepted Answer

gravity

Answer

acceleration

Answer

deceleration

Answer

net force

Newtons Three Laws

50 questions

The combined force of all forces acting on an object is the ___ force.

Newton's second law is applied as the formula _____

____ is the rubbing force that acts against motion between two touching surfaces.

Forces always act in equal and opposite pairs.

If there is a big mass, it would need a stronger force to accelerate it. Which law does this describe?

According to Newton's Third Law, if someone jumps off a skateboard, the skateboard will roll backwards because

When you step on a Lego. You push on the Lego and the Lego pushes back on you.

F = MxA

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