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Newton's Third Law of Motion

It's simple

For every reaction,

There is an EQUAL, but OPPOSITE reaction

But what exactly does that mean?

Let's take a closer look.

Third Law

The force of one object exerted on another.

According to Newton these forces will always act in equal but opposite pairs.

It's the LAW!

Force Pairs

Action

Just how common is

Newton's 3rd Law?

Reaction

It is used everyday by everyone

*Remember*

These will be equal and opposite

of each other

But do NOT cancel!

From walking,

to jumping,

to flying,

and more...

Let's keep it simple

Earth

When jumping, you push down on the ground.

As a result, the Earth pushes back and propels you upward.

YOU

Any

Questions?

Just remember,

with EVERY action there is an equal but opposite reaction.

It doesn't matter if the objects are at rest or not.

Ever rode a skateboard?

What happens when you step off of it?

What about objects at rest?

When sitting on a chair, there are two forces at work.

Force of Chair

Force of You

Let's start

the experiment!

But Wait...

The Earth doesn't

actually "push" back,

or does it?

Actually, YES, it does!

It's all

relativity!

We can't see Earth push back when we jump because it's mass is so large.

However, we CAN see the skateboard roll back.

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