How is crash force calculated?

Crash force, which is essential in understanding the potential impact a vehicle may have during a collision, is primarily calculated using the mass of an object (weight) and its velocity (speed). Specifically, the force exerted during a crash can be determined using the formula for momentum, which is mass multiplied by velocity. This relationship indicates that heavier objects moving at higher speeds will generate more force in the event of a crash, thereby influencing the level of injury that an occupant may sustain.

In this context, weight and speed are the critical factors in calculating crash force because they directly relate to the energy transferred during an impact. This makes the choice that combines weight and speed the most accurate for understanding crash dynamics. Understanding this calculation can help in making informed decisions about child passenger safety, such as the appropriate use of car seats and seat belts, as greater forces necessitate more effective restraint systems to keep occupants safe.