4 ms·

Yep. F = 1/2 * mass * velocity^2

• watersb 5y ago
  Okay, sorry, I guess this comment didn't help much. Also the formula is confusing 'F' denoting "force", rather than talking about kinetic energy. In the transport of hazardous materials of any kind, if a mishap occurs and the shipping containers crash, the energy of the collision is going to go up as the square (second power) of the velocity. Air transport typical speeds are in general 2-4x as fast as ground... So ground transport could involve overall lower risk than air. This is naïve hand-waving on my part.