Liquidmetal Technologies Inc (LQMT)

[mowo]

High angle of trajectory - Because railguns can fire into the stratosphere, they have a high angle of fire that allows them to engage targets on the reverse slopes of hills and mountains along the gun target line. This is an advantage over current naval surface support systems, which have relatively flat fire trajectories and consequently have a very limited capability to engage targets on reverse slopes in defilade.
That's right - you can't hide behind a mountain.

You can fire a projectile upward with a starting velocity over a mile per second, but as it follows a parabolic arc back to Earth, it will not hit its target at the same velocity. Terminal velocity will dictate its ultimate impact speed, and it will be substantially less than 1 mile per second no matter what the object is.