Related Experiment Video
Updated: Jun 18, 2026

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact
Published on: September 21, 2017
Car versus bicycle: conclusion
David W Ross1, Carol Wichman, Mike Mackinnon
1Penrose Hospital. DRDR0682@aol.com
Abstract:
A 58-year-old man was riding his bicycle and was struck by a car. He was ejected and landed on his back on the pavement of the roadway. He complained of severe pain in his lower back and sacral area. Ground emergency medical services (EMS) arrived to find a pale, diaphoretic man who was alert but in distress. His medical history was negative, and he was taking no medications. The initial heart rate was 130 beats/minute, and the blood pressure was 70 mmHg by palpation. A helicopter air ambulance was requested from the rural scene location to transport the patient to a trauma center. The physical examination by the flight crew demonstrated the patient had not changed from the original EMS assessment, despite the administration of 1 L normal saline intravenously. There were no apparent injuries to his head, neck, chest, or extremities.
Related Concept Videos
Efficiency of The Carnot Cycle
Otto and Diesel Cycle
Dynamics Of Circular Motion: Applications
Comparison Between Electrical And Gravitational Forces
Since both are inverse square law forces, the distance gets canceled when the ratio of the two forces is considered. Instead, the ratio of the electrical and gravitational forces depends on...
The Carnot Cycle
What could be the theoretical limit to the efficiency of a heat engine? The...
Comparison between RL and RC circuits
