Back of my hand calculations:
You have a 40,000 lb slab
The center of gravity falls about 10' (about .75 seconds, 25 feet per second final velocity, average velocity 12.5 feet per second)
The center of gravity ALSO moves about 10' sideways.
SOMETHING imparted this 40,000 lb slab to a average velocity of 12.5 feet per second sideways (during the 10' vertical fall).
energy = 40,000 lb x 12.5 feet per second == 500,000
A 1000 fps projectile would need to weigh about 500 lbs
A 2700 fps projectile would need to weigh about 185 lbs
Back of my hand calculations:
You have a 40,000 lb slab
The center of gravity falls about 10' (about .75 seconds, 25 feet per second final velocity, average velocity 12.5 feet per second)
The center of gravity ALSO moves about 10' sideways.
SOMETHING imparted this 40,000 lb slab to a average velocity of 12.5 feet per second sideways (during the 10' vertical fall).
energy = 40,000 lb x 12.5 feet per second == 500,000
A 1000 feet per second projectile would need to weigh about 500 lbs
A 2700 feet per second projectile would need to weigh about 185 lbs