The last time I looked at this projectile motion lab, I was confused. My different methods for measuring the launch speed of the ball were not even close to being consistent. So, I am bringing out the ...

Suppose you throw some object near the surface of the earth. If the only significant force on the object is the constant downward gravitational force, we call this "projectile motion." Yes, that ...

Guided-missile destroyer Lyndon B. Johnson (DDG-1002) is made ready before flooding of the dry dock at General Dynamic-Bath Iron Works shipyard. US Navy Photo ARLINGTON, Va. – The Navy is still ...

One of the SCO’s priorities was adapting technology from “railguns”. Such guns use neither explosives nor propellant, but instead rely on electromagnetic forces to fire projectiles at speeds of up to ...

The Pentagon is pursuing an innovation missile-defense system that could address some of the shortcomings of the existing systems it deploys. There are a number of major (somewhat interrelated) ...