# Definition : Kinetics of a trauma

The amount of kinetic energy that a moving object has depends on its speed and mass. More precisely, the kinetic energy is proportional to the square of the speed. This means that if you double your speed, you multiply your kinetic energy by 4, and if you triple your speed, you multiply your kinetic energy by 9.

This concept is important in the field of road safety, because the violence and severity of accidents depend on the amount of kinetic energy that is suddenly dissipated upon impact. When a vehicle is involved in an accident, the force of the impact results in deformation of the car's parts as well as injury to the occupants.

This also applies to other trauma-type rescue situations, such as falls or impacts during sports. Health and safety professionals must therefore be aware of the importance of kinetic energy and take this factor into account when managing emergency situations.

## Definition and Meaning

Trauma kinetics refers to the study of the forces involved in injury. This includes the physical forces that caused the injury, the body movements that led to the injury, and how these forces were dissipated in the body. Analyzing the kinetics of an injury can help health care professionals understand how an injury occurred and identify the resulting damage. This can be important in the diagnosis and treatment of traumatic injuries, especially in cases of severe trauma such as motor vehicle accidents, falls, and assaults. Understanding the kinetics of trauma can also help prevent injuries by identifying risky situations and taking steps to avoid them.

## The consequences of the increase of the kinetic energy

A car driving at 100 km/h has 4 times more kinetic energy than at 50 km/h. If the speed increases from 50 to 200 km/h, the kinetic energy is multiplied by 16. These increases in kinetic energy can lead to violent and severe impacts in the event of an accident, causing deformation of car parts and personal injury.

## The transposition to other trauma rescue situations

This relationship between kinetic energy and speed can also be applied to other traumatic rescue situations such as

• collisions between players in a field hockey game,
• falls from height,
• impacts during a fall down the stairs,
• etc.

It is important to understand this relationship in order to effectively assess risk and take appropriate precautionary measures.