The summary is:
This is a transcript of a video that tests the myth that dropping a coin from the top of the Empire State Building could kill someone. The video shows experiments with coins, pens, bullets, and other objects to demonstrate how air resistance and terminal velocity affect their impact. The video also explains the physics of falling objects and gives examples of lethal and non-lethal projectiles. The video concludes that a coin or a pen would not be fatal, but objects heavier than a few hundred grams could be.
Here are the key facts extracted from the text:
1. The text is a transcript of a video that tests the myth of dropping a coin from the top of the Empire State Building.
2. The video features Adam Savage, one of the original mythbusters, and Derek Muller, a science communicator and YouTube creator.
3. The video shows that a coin dropped from a helicopter does not hurt or kill anyone on the ground, because it reaches its terminal velocity after falling just 15 meters.
4. The video also shows that a pen dropped from a helicopter is not lethal either, because it oscillates and experiences too much air resistance relative to its weight.
5. The video explains that terminal velocity depends on the mass, cross-sectional area, shape, and drag coefficient of the object, as well as the density of the air.
6. The video demonstrates terminal velocity with different objects such as a hammer, a feather, a lacrosse ball, a person, water drops, hailstones, and bullets.
7. The video mentions some historical and contemporary examples of using kinetic projectiles as weapons or causing accidental deaths by falling objects.