Quick Answer. The Cessna Skyhawk, a single-engine plane, has a maximum cruising speed of 124 nautical miles per hour, which is just over 140 miles per hour ground speed. A Boeing 747 typically cruises at 567 miles per hour.
Furthermore, the psychosocial effects of extreme events have commonly been viewed as resulting from a complex array of primary and secondary stressors. Primary stressors have been defined as stress that is âinherent in particular major incidents, disasters and emergencies and arising directly from those eventsâ .
Stress and heart rate variability. The autonomic nervous system (ANS) is the part of the. peripheral nervous system that serves as a control. mechanism to maintain the body under stable conditions. (homeostasis). The ANS contains two main branches, the. sympathetic nervous system (SNS) and the parasympathetic.