What happens to the motion of an object when the forces are balanced?

C) There is no change in motion.

Why does the book sitting on the table not move?

Because there is no net force acting on it.

Because it is glued to the table.

Because it is too heavy to move.

B) A force that opposes motion between two surfaces that are touching

A) A force that attracts objects

C) A force that speeds up motion

D) A force that has no effect on motion

What is sliding friction?

It occurs when two solid surfaces slide over one another.

It occurs when two surfaces roll over each other.

It occurs when a solid surface moves through a fluid.

It occurs when a surface is at rest.

What does Newton's first law state?

An object in motion tends to stay in motion while an object at rest tends to stay at rest unless acted on by some force

Acceleration means a change in speed or direction of something

Force equals mass times acceleration

For every action, there is an equal and opposite reaction

A tendency to remain unchanged (keep moving or keep still)

The resistance that one surface or an object encounters when moving against another

The amount of stuff that makes up something

A change in speed or direction of something

The resistance that one surface or an object encounters when moving against another

A tendency to do nothing or to remain unchanged

The amount of stuff that makes up something

A change in speed or direction of something

What is Newton's second law?

Force equals mass times acceleration

For every action, there is an equal and opposite reaction

An object in motion tends to stay in motion while an object at rest tends to stay at rest unless acted on by some force

Acceleration means a change in speed or direction of something

What is Newton's third law?

For every action, there is an equal and opposite reaction

An object in motion tends to stay in motion while an object at rest tends to stay at rest unless acted on by some force

Acceleration means a change in speed or direction of something

Force equals mass times acceleration

What is an example of Newton's first law?

A pair of snow skis aren't going to go anywhere without a skier in them forcing them to move

Trying to push a couch that's sitting on a fluffy rug is harder than pushing that same couch on a smooth floor

A ball rolling along a level surface will eventually slow down and stop due to friction

What is an example of inertia?

A book on a table remaining at a rest

Trying to push a couch that's sitting on a fluffy rug is harder than pushing that same couch on a smooth floor

A ball rolling along a level surface will eventually slow down and stop due to friction

What is an example of air resistance?

A paper airplane slowing down a in the wind

A ball rolling along a level surface will eventually slow down and stop due to friction

Trying to push a couch that's sitting on a fluffy rug is harder than pushing that same couch on a smooth floor

What is the concept of Newton's third law?

For every action, there is an equal and opposite reaction

A tendency to do nothing or to remain unchanged

The amount of stuff that makes up something

The resistance that one surface or an object encounters when moving against another

What is an example of Newton's third law?

a car moving forward when being pushed forward

A ball rolling along a level surface will eventually slow down and stop

The resistance that one surface or an object encounters when moving against another

Understanding Forces

Quiz

•

Physics

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS2-2, MS-PS2-1, HS-PS2-1

+1

Standards-aligned

Megan Baker

Used 8+ times

FREE Resource

38 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a force?

A) A push or a pull

B) A type of energy

C) A form of matter

D) A chemical reaction

Tags

NGSS.MS-PS2-1

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Force is expressed in ______.

Newtons (N)

Joules (J)

Watts (W)

Pascals (Pa)

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a force responsible for?

Creating energy

Putting all things in motion

Stopping motion

Changing temperature

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If one person applies a force of 25 N and another applies a force of 20 N, what is the total force applied?

45 N

40 N

50 N

30 N

Tags

NGSS.MS-PS2-2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Forces in opposite directions are subtracted. In a tug of war, if one team pulls with a force of 12 N and the other team pulls with a force of 10 N, what is the net force?

2 N

22 N

0 N

10 N

Tags

NGSS.MS-PS2-2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the net force tell you about the forces on an object?

A) Whether the forces are strong or weak

B) Whether the forces are balanced or unbalanced

C) Whether the forces are moving or stationary.

Tags

NGSS.HS-PS2-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Balanced forces have a net force of ______.

zero

one

two

three

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Understanding Forces

38 questions

What is a force?

Force is expressed in ______.

What is a force responsible for?

If one person applies a force of 25 N and another applies a force of 20 N, what is the total force applied?

Forces in opposite directions are subtracted. In a tug of war, if one team pulls with a force of 12 N and the other team pulls with a force of 10 N, what is the net force?

What does the net force tell you about the forces on an object?

Balanced forces have a net force of ______.

What happens to the motion of an object when the forces are balanced?

Why does the book sitting on the table not move?

What do unbalanced forces produce?

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