How many pounds per square inch to break the neck?

The amount of force required to break a human neck can vary significantly depending on several factors, including the individual's anatomy and the specific angle of force applied. Generally, it is estimated that a force of around 1,000 to 1,500 pounds per square inch (psi) may be needed to fracture the cervical vertebrae. However, it’s important to note that neck injuries can occur with much lower forces due to the complex nature of the cervical spine and surrounding tissues.