Veritasium
Season 2 Episode 15 - Best Film on Newton's Third Law. Ever.
There is a gravitational force of attraction between the Earth and the moon, but is it mutual? That is, are the forces on the Earth and the moon equal? Most people would say no, the Earth exerts a greater force of attraction because it is larger and has more mass. This is a situation in which Newton's Third Law is relevant. Newton's Third Law says that for every force, there is an equal and opposite reaction force. So the force the Earth exerts on the moon must be exactly equal and opposite to the force the moon exerts on the Earth. But how can that be - that the same size force keeps the moon orbiting, but barely affects the Earth? The answer is inertia - the tendency for all objects with mass to maintain their state of motion. Since the Earth has much more mass than the moon, it has greater inertia and therefore experiences much less acceleration for the same amount of force.
Episodes in Season 2
Atomic Theory
2 min
Thomson's Plum Pudding Model of the Atom
2 min
Cathode Rays Lead to Thomson's Model of the Atom
3 min
Scientific Notation - Explained!
5 min
I'm Atoms (Scientific Cover of Jason Mraz's I'm Yours)
3 min
Scientific Notation - Example
1 min
The Difference Between Mass and Weight
3 min
Egg Experiment to Demonstrate Inertia
1 min
Gravity (Scientific Version of John Mayer's Gravity)
4 min
How Far Away is the Moon? (The Scale of the Universe)
2 min
What is a Force?
3 min
What Forces Are Acting On You?
2 min
Why Does the Moon Orbit Earth?
1 min
What Is Gravity?
2 min
Best Film on Newton's Third Law. Ever.
4 min
Calculating Gravitational Attraction
3 min
Which Hits The Ground First?
3 min
Misconceptions About Falling Objects
3 min
Is There Gravity In Space?
2 min
Three Incorrect Laws of Motion
2 min
Experiments A Cappella
1 min
Khan Academy and the Effectiveness of Science Videos
8 min
What Are Atoms and Isotopes?
3 min
Supercooled Water - Explained!
3 min
How Damaging is Radiation?
4 min
