Newton's Third Law

Single seat CO₂ powered rocket cars.

The choice of propellant for this toy rocket makes a huge difference in thrust.

A motorized fan mounted on a reaction cart blows air into a "sail" which is also mounted on the cart. Which way will the cart move?

Radio controlled car moves one way while road moves the other.

What it shows:

We tell our students that, when a car drives down the road, the road and the Earth move in the opposite direction, albeit imperceptibly. This demonstration is a realization of...

What it shows:

A straightforward demonstration of Newton's 3rd law, that forces are interactions and thus come in pairs.

How it works:

Two people, each sitting (cross-legged) on their own board, position themselves in the center of the track facing each...