Final answer:
The pressure of a 66,000 lb jet moving slightly faster than sound upon impact would be categorized as supersonic pressure. Supersonic refers to speeds greater than the speed of sound. The exact pressure would depend on multiple factors and would require complex calculations to determine.
Step-by-step explanation:
If a jet weighs 66,000 lb and moves slightly faster than the speed of sound, it would be experiencing supersonic pressure upon impact if it hit something. A supersonic object is one that travels faster than the speed of sound. The pressure experienced upon impact at these speeds is not solely determined by the speed at which the jet is traveling but also by a variety of factors including the angle of the impact, the shape of the jet, and the altitude at which it is flying.
Sonic booms are a continuous effect while an aircraft is traveling at supersonic speeds due to the object constantly generating shock waves as it travels through the air. Therefore, if a supersonic jet were to strike an object, the impact would be accompanied by the pressure effects of these shock waves. However, the actual pressure upon impact would require complex calculations involving the jet's velocity, the density of the air, and the structural characteristics of both the jet and the object it strikes.