Veritasium
Season 2 Episode 17 - Which Hits The Ground First?
A basketball and a 5kg medicine ball are dropped simultaneously. Which one hits the ground first? It seems obvious that the heavy one should accelerate at a greater rate and therefore land first because the force pulling it down is greater. But this is forgetting inertia - the tendency of mass to resist changes in motion. Therefore, although the force on the medicine ball is greater, it takes this larger force to accelerate the ball at the same rate as the basketball.
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