NEWTON'S 3RD LAW

NEWTON'S 3RD LAW

Multiple Choice

The force that pulls things towards the earth is called?

• friction

• gravity

• force

Multiple Choice

When an object changes position or location, it is called?

• friction

• gravity

• motion

Multiple Choice

The force that occurs when two surfaces rub against each other is called?

• friction

• gravity

• motion

Multiple Choice

A bowling ball rolling down the alley towards the pins is what type of friction?

• fluid friction

• rolling friction

• dry friction

Multiple Choice

According to Newton's second law, if you increase the force applied to an object :

• it accelerates more

• it doesn't move

• you get more inertia

• it decelerates

Multiple Choice

Concept Review:

Is an object resistance to change its motion

• force

• inertia

Multiple Choice

Applying an unbalance _____ to an object causes it to ______ .

• force, accelerate

• accelerate, force

• force, move

Newton's 3rd Law

For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

Let's break it down...

• The Law of Action-Reaction.

• For every action there is an equal and opposite reaction.

• Forces come in pairs when acting on two interacting objects.

• The size of the force on one object is equal to the size of the force on a second object.

Multiple Choice

What is another name for Newton's 3rd Law?

• The Law of Opposites Attract.

• Fig Newtons.

• The Law of Action-Reaction.

Multiple Choice

For every action there is an equal and opposite reaction.

• True

• False

Multiple Choice

Do forces come in pairs when acting on two interacting objects?

• yes

• no

Multiple Choice

The size of the force on one object is equal to the size of the force on a second object.

• True

• False

Example

A swimmer pushes back on the water and moves forward.

Multiple Choice

Which is the Action Force in this scenario: "A swimmer pushes back on the water and moves forward."

• A swimmer pushes back.

• A swimmer moves forward.

Multiple Choice

Which is the Reaction Force in this scenario: "A swimmer pushes back on the water and moves forward."

• A swimmer pushes back.

• A swimmer moves forward.

Example:

A rocket blasting off from the launch pad.

Multiple Choice

Which is the Reaction Force in this scenario: "A rocket blasting off from the launch pad."

• A rocket blasting off from the launch pad.

• The thrust of the fuel against the launch pad.

Multiple Choice

Which is the Action Force in this scenario: "A rocket blasting off from the launch pad."

• A rocket blasting off from the launch pad.

• The thrust of the fuel against the launch pad.

Examples:

A fireman turns on a hose and is knocked backwards.

Multiple Choice

Which is the Action Force in this scenario: "A fireman turns on a hose and is knocked backwards."

• The force of the water from the hose.

• The fireman is knocked backwards.

Multiple Choice

Which is the Reaction Force in this scenario: "A fireman turns on a hose and is knocked backwards."

• The force of the water from the hose.

• The fireman is knocked backwards.

Don't forget your work in Canvas!

Time for Small Groups to catch up on work!