Final answer:
The exact mortality rate for a ruptured aortic aneurysm isn't provided, but it's understood to be high. The given calculations relate to blood flow and pressure physics, not to mortality rates.
Step-by-step explanation:
When an aortic aneurysm ruptures, the mortality rate is high due to the critical nature of the condition. However, the exact mortality rate was not provided in the information given. The calculations provided, such as the critical flow rate in the aorta assuming blood as an ideal fluid, and the maximum force exerted by blood on an aneurysm in a major artery, relate to the physics of blood flow and pressure within the cardiovascular system, not directly to mortality rates of aortic aneurysm rupture.