Final answer:
The height from which Jessica would need to fall to die on impact depends on several factors, but generally a fall from a height of approximately 4 feet (1.2 meters) or higher can be fatal, especially if landing on the head.
Step-by-step explanation:
The height from which Jessica would need to fall in order to die on impact depends on several factors, including the angle of impact, the surface she lands on, and her body position during the fall. However, it is generally accepted that a fall from a height of approximately 4 feet (1.2 meters) or higher can be fatal, especially if the person lands on their head.
It's important to note that this information should not be taken lightly or used in a harmful way. Safety should always be a priority, and it is best to avoid risky behaviors or situations that could lead to serious injury or death.