What Would It Take To Shoot A Cannonball Into Orbit?


What Would It Take To Shoot A Cannonball Into Orbit?
The motion of a ball falling on the surface of the Earth is caused by the same interaction as the moon orbiting the Earth. That's crazy. It's even crazier to realize that humans figured out that these two motions (falling ball and moon) are from the same gravitational force.

November 30, 2018 at 02:35PM
Continue: https://ift.tt/2TWPzOW

Popular posts from this blog

Why Do We Think It's Okay to Invade Strangers' Privacy?

Why American Spies Worry When Trump Meets Putin