3rd Law of Motion

Rotational Inertia

Action/Reaction - NASA
(right click, save as)

"Which way is

the skater below

moving?"

3rd Law of Motion

For every action
there is an equal but opposite reaction

"Press on a rock and the rock presses on you
(with an equal, but opposite force)"

- Newton

When object A exerts
a force on object B,

Object B exerts
an equal force on A
but in the opposite direction

Forces Always
Come in Pairs

A lamp applies a force of 10 N to a table.

What force does the table
apply on the lamp?

Which direction is this force applied?

Earth pulls
down on you.

That's half the story...

You pull up on the earth. Equal. Opposite.