In a previous post, I was trying to show that the range of a projectile depends on the launch angle. Yes, this isn't that too difficult to see in an introductory physics course, but how do you show ...

I’ve started recreating many of my numerical model tutorials for introductory physics. In the beginning, I had students use spreadsheets to create models. Of course, spreadsheets aren’t very good for ...

The USS Zumwalt (DDG-1000) is the US Navy’s latest warship, commissioned just last month—and it comes with the biggest guns the Navy has deployed since the twilight of the battleships. But it turns ...

The Office of Naval Research is getting ready to deploy their electromagnetic Railgun for testing for the first time next year. But what is a gun without ammo? The Hyper Velocity Projectile is being ...

The Los Angeles Police Department has lifted a week-old moratorium on the use of certain hard-foam projectiles at protests after a federal judge revised her recent court order restricting the weapons’ ...

Vomiting is something that everyone will experience at some point. It’s typically accompanied by a wave of nausea, and a queasy feeling in the stomach afterward. ‌ Projectile vomiting is when your ...

Figure 1: Formation of Copernicus crater by a low-speed impact. Figure 3: Impact velocity distribution on the Moon. The planetary geology community has not previously considered the possibility that ...